The best time zone calculator for iPhone – The Sweet Setup (2023)

Zones is our favorite time zone calculator app for iPhone because of its simple UI, minimal functionality, and ability to look at specific future times in many time zones.

We spent several weeks looking at over two dozen time zone iOS apps to determine which one makes dealing with multiple time zones easy and simple. If you have colleagues, family, or friends in other parts of the world, you know how much of a headache converting time zones can be — especially if you’re dealing with more than just two zones.

Use Case

I frequently have to set up meetings between groups of people that span several time zones — sometimes up to 5 or 6 different zones across the world. I rely on my iPhone to convert time zones while I’m trying to schedule a meeting so everyone can attend. I quickly realized that using a world clock that only shows current time wasn’t very helpful for scheduling meetings in the future. In some time zones, you’re not even on the same day of the week.

Macs and iOS devices have world clocks built into the OS, but they can only show you the current time. For scheduling meetings in the future, it’s imperative that the app can show you those future times across all time zones.

I needed an app that could allow me to set future times in different time zones (not just my own local time) so that I could find a great time for us all to meet without causing any confusion with the group. And, I wanted it to be simple and fast. This was the basis for creating our criteria for this app category.


Our criteria for a time zone converter are simple, but also make it easy to remove many from the list. In case you haven’t looked, world clocks is a very congested genre in the App Store. We needed specific criteria to narrow down the test group.

  • Easy to use. Converting time zones is already difficult, so an ideal app for this job needs to be easy to operate. Some apps try to offer too much functionality or make it difficult to discover and learn critical features. Our ideal app makes the process of exploring different times in several time zones effortless.
  • Limited functionality. We’re not looking for a Swiss Army Knife of time zones, world weather, alarms, lists, and more. We want an app that does one thing well: show us several time zones and let us look at future times across all those zones.
  • Ability to look at future times. Like I mentioned earlier, just being able to see the current time across many time zones isn’t enough. We need the ability to set future times starting from any time zone.
  • Pleasant design. This usually goes without saying, but we want something that’s kept up-to-date with current iOS design trends and looks great in the process.
  • Steady updates. Similar to the point above, we want an app that we can depend on when new iOS updates come out. We don’t want to fall in love with an app only to find that it starts stagnating and developing bugs over time that aren’t fixed.
  • Today widget. For those times when you want to quickly glance at several current times, a Today widget is crucial. On iOS, Apple doesn’t offer a widget for this, so our pick needs to have one.
  • Price. Price isn’t a huge factor in this category of apps, but we do appreciate a simple pricing scheme and the ability to turn off ads. Also, we love supporting the developers that make these tools we come to depend on over time.

Our pick: Zones

The best time zone calculator for iPhone – The Sweet Setup (1)

After several weeks of trying out several different apps for converting time zones, we landed on Zones because it looks great, is easy to use, and makes the process of converting time zones effortless.

First use

The first time you use a time zone converter can be overwhelming because you have to add several different zones, the app might have a long default list to begin with, and you have to figure out what the baseline zone is.

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Zones is one of the few apps that uses your location to determine your local time. It only uses your location data while you’re using the app, and from what I’ve seen, it uses this privilege very infrequently.

When first launching the app, there aren’t any time zones displayed except for your current time. To add more zones, just tap the plus button in the bottom right corner.

The best time zone calculator for iPhone – The Sweet Setup (2)

Using the app

To add a time zone, just tap the + icon, search for the city, and tap it once it comes up. Zones does this process extremely quickly. Other contenders were a bit slow with the process of adding more time zones. Also, another key factor here was the information included while searching for a city. It displays city, country, and time zone name. You can search by typing in the name of the city, or you can scroll through the entire list.

The best time zone calculator for iPhone – The Sweet Setup (3)

If you purchase the the “Go Pro” in-app purchase, there isn’t a limit to the number of time zones you can add to the main view. But, in the event you need to remove a zone from the list, just swipe left and tap Delete.

If you need to do more editing to your list, there’s a convenient edit button that allows you to bulk delete and reorder your list.

The best time zone calculator for iPhone – The Sweet Setup (4)

In a recent update, Zones also includes an option to automatically sort your time zones. You can turn off sorting (manual drag-and-drop), sort alphabetically in ascending or descending order by city, or sort in GMT or reverse-GMT offset. I prefer the “Reverse GMT Offset” option, as that makes the most sense for how I use Zones and where I live.

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Once you’ve set up your time zones, you have a simple, easy-on-the-eyes view of the current times.

To change the time on any time zone, just tap it. A small date and time selector pops up for you to dial in the time you want to view. Tap Done, and all the zones update instantly. This was a big deal to me, as many apps make this process difficult or bury the feature under several additional taps. Zones keeps this process at the very top, which is fantastic.

The best time zone calculator for iPhone – The Sweet Setup (5)

When you’re done looking at future times, just tap Reset to current time at the bottom of the screen to return to your current time. Again, this wasn’t as straight-forward and obvious in other apps, so I appreciate the simplicity here.

One other feature that appears when you tap the gear icon in the bottom left is a settings screen. Along with the option to purchase a Pro option to unlock unlimited time zones, themes, and more, there are a few other minor settings to customize the app.

The best time zone calculator for iPhone – The Sweet Setup (6)

You can choose to display country names, display your local time, and a few other view options. You can also select one of four themes (with the Go Pro purchase), sort order, minute selection increment, and a Today widget limit.

Finally, there are helpful links for getting support with the app, and rating or sharing Zones with someone else.


The design was updated in the latest update, and while I’m not a fan of the typeface and color choices, it’s still clean, calm, and easy to take in. There’s a lot of information being displayed in this app, but it doesn’t feel overwhelming, and it’s also very fast when making changes. I’ve used this app to figure out meeting schedules from California, Missouri, Chile, Switzerland, New Delhi, and Perth. It was an easy process and I actually found it delightful because of all the not-so-great experiences I’ve had in the past with this task. Instead of a chore, it’s now an easy task that takes seconds instead of minutes.

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One complaint I have with the newest version of the app is the presence of a prominent button that apparently does nothing. At the bottom of the app, there’s a clockface icon that responds to taps, but does nothing. In general, if a UI element has no function, it needs to be removed. I hope this oversight is addressed in a future update, as it only causes confusion.

Today Widget

Zones features a Today widget that is helpful for quick glances at current times in the zones you’ve set up, and you can also make quick time adjustments. Simply tap a time zone and use the +/- buttons to adjust the time, and the other time zones automatically change. After you’re done, just tap the time zone row again to return to the current time.

The best time zone calculator for iPhone – The Sweet Setup (7)

The Zones widget offers the same information in the Today view as the main app. When pulling down the Today view, the time zone data populates instantly. Other apps we tried took a couple of seconds to retrieve data before populating in the widget.

Overall, the widget is a great addition for quickly glancing at time zones across the world or making quick time calculations.


Zones is free to download and offers a simple in-app purchase to remove ads, unlock unlimited cities, themes, and more. The price is extremely fair (maybe a bit low) and very competitive. It also gives us confidence that it will be around for quite a while.

Runners up


TimeZoner is another great app that does one thing well. It has the same features as Zones, but it requires an extra tap to change times on a time zone since you have to select a time zone first. TimeZoner also lacks a Today widget, which is one of our requirements for quickly glancing at current times.

The best time zone calculator for iPhone – The Sweet Setup (8)

While we prefer Zones, TimeZoner is an equally well-built, fantastic app. You can’t go wrong with either one.

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TimeZoner is either free (with ads) or a full version.

Time Zones +

Time Zones + was my personal favorite earlier this year. It offers the functionality we expect based on our criteria, including a nice design and a Today widget, but it requires several more taps to operate than Zones and TimeZoner. It’s a nice app, but it’s not as easy or well-designed as others out there.

The best time zone calculator for iPhone – The Sweet Setup (9)

Honorable Mentions


Circa employs an interesting and unique visual design and interaction, but requires more time to use. Basically, time is represented visually on a 24 hour clock dial. As you rotate the needle, the times in the lower portion of the app update accordingly. This is fun to use, but ultimately not as easy and straight-forward as others. Another downside is that you can only view 3 time zones at a time. Circa also lacks a Today view widget, but, strangely enough, it is the only app that we tested that features a watchOS app.

World Clock Pro Mobile

Similar to Circa, World Clock Pro Mobile uses the same visual design of placing time zone charts against a clock dial to represent different time zones. Like Circa, this is a fun and visual way to look at time zones, especially how they interact with each other. But, at the end of the day, we prefer the design of Circa over World Clock Pro Mobile.


Globo is unique in this category, as it offers much more than time zone conversions. It also features latitude/longitude information, maps, weather, and time zone-specific alarms for each time zone you add.

This would be a major contender with our picks if it was easier to figure out how to use the time zone converter. The time zone information is buried in the 3rd tab of each time zone, and it took us longer than it should have to discover how to set a time zone as the primary by which all others would relate.

All in all, Globo looks great and offers an abundance of good information, but it doesn’t quite fit our criteria for this pick.

Time Buddy

Time Buddy is one of the more well-known time zone converter apps, but the design and functionality just didn’t compete with our pick. Each time zone is represented by a row of blocks that represent hours. These rows line up by each time zone, and all you have to do to change the time is swipe left and right to increase or decrease the time. It works really well, but the overall aesthetic feels dated.

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Also, one of the main points of this app is setting up meeting invites that you can send to people straight from the app. Since this feature is so important to the app, you can’t get away from it. So, for someone who just wants to calculate different time zones, this feature can get in the way and cause some frustration. Still, it’s well-built and does a great job at what it was designed to do.

An incredibly useful clock app is delivered as part of iOS, and it even features an extremely useful time zone section in the World Clock tab. If you only need to look at the current time in several time zones, you really can’t go wrong with this one. It doesn’t have the features of our pick, like the ability to look at future times or the option of a Today view widget, but it’s the best at what it does. Even better, you can use this same functionality in OS X with the Today pane.


Zones is our favorite time zone calculator because of its simple, intuitive design and competitive price. And, it offers additional perks in the way of a Today widget, and is extremely easy to understand and use from the beginning.


How do I get the correct time zone on my iPhone? ›

On your iPhone, iPad or iPod touch
  1. Go to Settings > General > Date & Time.
  2. Turn off Set Automatically.
  3. Now you can change the time zone or the date and time: Tap Time Zone and enter a city with the time zone that you need. Or tap the date to change the date and time.
13 Jun 2022

What is the easiest way to calculate time zones? ›

To find the time zone in hours of a particular location, you can take the longitude -- in degrees -- and divide it by 15. So, for example, 75° E would be 75/15 which equals 5. That translates to the time zone being 5 hours ahead of UTC or GMT time, which can also be labeled as UTC+5.

How do I set my iPhone to GMT? ›

Settings -> General -> Date and Time -> Set Manually -> Time Zone = UTC (For coordinated universal time - the new term for GMT). You can also select UTC for one of the World Clocks in the Clock app.

Does time zone change automatically on iPhone? ›

iPhone can change the time zones automatically depending on your geographic location. The time zone will update automatically to a local time only if "Set Automatically" is turned on in the Settings app of your device. The automatic time zone accuracy will improve when your iPhone Location Services is turned on.

Which time zone is the most important? ›

How did Greenwich Mean Time become the international standard? In 1884 the Greenwich Meridian was recommended as the Prime Meridian of the World. There were two main reasons for this. The first was that the USA had already chosen Greenwich as the basis for its own national time zone system.

What are the 3 major time zones? ›

Due to Fleming's work, the United States was broken into four major time zones. They are Eastern, Central, Mountain, and Pacific.

What is the least used time zone? ›

There is one timezone that is completely uninhabited: the UTC-12:00. It covers only two islands: Baker Island and Howland Island that are both uninhabited (owned by US).

How do you set up dual time zones? ›

Set time, date & time zone
  1. Open your phone's Clock app .
  2. Tap More. Settings. To pick your home time zone: Tap Home time zone. To automatically update your timezone: Tap Change date & time. Set time zone automatically. To update your timezone based on your location: Tap Change date & time Set time zone automatically.

What is a dual time zone? ›

A dual-time watch has two hour hands in order to indicate time in two different time zones. This complication is popular with travelers, as it allows the wearer to set a “home” time zone for quick reference. The second hour hand is sometimes referred to as the GMT or UTC hand.

Can I have 2 regions on iPhone? ›

You can have 2 Apple IDs, with each one set up for a different region. The only place you need to use the 2nd ID is in the App Store/iTunes. Then swap regions/IDs when required. When signed in with one ID, you won't be able to update apps purchased with the other ID.

How do you manually calculate time zones? ›

You have to divide the longitude, in degrees, by 15 to find the appropriate time zone, in hours. For example: At 150 degrees west (or 150° W) longitude, the time should be 150 degrees divided by 15 degrees = 10 hours behind UTC, or UTC-10.

What is the best way to calculate time? ›

To calculate the elapsed time, it is easiest to count up in hours. First find the number of minutes from the earliest time to the next hour by subtracting the number of minutes in the earliest time from 60. Count up in hours until the hour before the final time.

What is the formula to calculate for time? ›

time = distance ÷ speed.

How do I set GMT time zone? ›

Set the GMT hand to your Current Home Time.
  1. Pull the crown out to the third position, which moves the GMT hand.
  2. Move the GMT hand until it matches your Home 24 Hour Time. Three PM would be 15:00, for example.
  3. For minute accuracy, simply continue turning the crown until the minute hand reaches the current minute.
14 Oct 2022

Who is on GMT time? ›

Greenwich Mean Time (GMT) has no offset from Coordinated Universal Time (UTC). This time zone is in use during standard time in: Europe, Africa, North America, Antarctica.

How does my phone know what time zone I'm in? ›

When your Android device is connected to a cellular network, it automatically updates its clock to correspond to your current time zone. If you're unable to connect to a network (for example, when you're on an airplane) use the Time settings to manually change the time zone on the Android device.

What time will my iPhone change for daylight Savings 2022? ›

In 2022, daylight saving time in the United States will begin on Sunday, March 13 and end on Sunday, November 6. On the former date, the time across the country will skip straight from 1:59 a.m. to 3 a.m. (except in Hawaii and Arizona, which don't make the adjustment).

How does your phone know when to change time zones? ›

Your Android phone will automatically check the network for the correct date and time and switch on its own overnight, changing the system time so that things like calendars and alarms will still be correct.

What is the normal time zone? ›

Standard time is the local time in a country or region when Daylight Saving Time (DST) is not in use. Standard time is also known as winter time or normal time. Standard time is sometimes referred to as or winter time or normal time, while DST may also be called summer time, especially in the UK.

What time zone is first in the world? ›

Kiribati – pronounced Kiribas – is the only nation on Earth to permanently trespass into GMT+14: the earliest time zone in the world. You can think of Kiribati as the eternal land of tomorrow: if it's Sunday where you are, it's probably Monday in Kiribati.

What time zone is most used in USA? ›

US time zones by state

UTC-05:00 Eastern Time Zone, the most populous in the USA, includes the District of Columbia with the capital city of Washington and 23 states wholly or partially located within this zone. De facto the Eastern Time often is used as the USA official time.

What is my timezone UTC? ›

UTC current time is 13:35:38

UTC current date is 24th Thursday November 2022.

What is UTC time in USA? ›

UTC is commonly referred to as International Time, Universal Time (UT), Zulu Time (U.S. military), or Greenwich Mean Time (GMT). GMT was established by international conference in 1884 as International Time.
Nov 24, 2022. 0:00. :05 Hours. 12:00. :05 am.
0:00:05 Hours
12:00:05 am

What is the latest time zone? ›

For any given date, the latest place on Earth where it would be valid, is on Howland and Baker Islands, in the IDLW time zone (the Western Hemisphere side of the International Date Line).

Where in the world has no time zone? ›

At the North Pole, 24 time zones collide at a single point, rendering them meaningless. It's simultaneously all of Earth's time zones and none of them. There are no boundaries of any kind in this abyss, in part because there is no land and no people.

What state has no time zone? ›

Two states -- Arizona and Hawaii -- and the U.S. territories of American Samoa, Guam, the Northern Mariana Islands, Puerto Rico, and the Virgin Islands observe permanent standard time.

Which country has zero time zone? ›

It is also called the zero meridian.
Countries in Greenwich Mean Time.
20 more columns

Why does my phone have 2 time zones? ›

Dual clocks will display on the lock screen when the following conditions are met: Dual clocks is enabled, and Home city has been set. To apply these settings, open Settings, and search for and access Dual clocks. You are in a different time zone from that of your Home city.

Can Apple view two time zones? ›

On your iPhone, in the Clock app > tap the World Clock tab, then: Tap the plus sign (top right) > add any locations that you would like to be able to view on your watch face, in Glances or in the World Clock app. Tap Edit (top left):

What place has 2 time zones? ›

NICOSIA, Cyprus — Tanur Tsiknakis and her husband, Michalis, now have two sets of clocks in their home they must follow — each on a separate time zone one hour apart.

What are the two time zones in USA? ›

The United States is divided into six time zones: Hawaii-Aleutian time, Alaska time, Pacific time, Mountain time, Central time and Eastern time.

What city has 2 time zones? ›

Sioux Falls, the state's biggest city is on the eastern edge of the state and in the Central Time Zone. Rapid City, South Dakota's second largest city, is in the western part of the state and in the Mountain Time Zone.
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27 Jan 2020

What happens if I change my iPhone region? ›

That means you lose access to all your existing iTunes and App Store purchases when you change your Apple ID to a different country. Anything already on your device is still available to use, and apps you've already downloaded still get the latest updates.

Does changing your phone's region do anything? ›

When you change your country, you won't be able to use your Google Play balance that you have in your old country in your new country. You may lose access to some books, movies, TV shows, games, and apps.

How many times can you change region on iPhone? ›

However, Apple can restrict switching to once per 90 days on a given device after you use certain iTunes features on that device, which include downloading and playing movies, music, and TV shows, logging into Apple Music, or downloading past purchases in any store.

What is calculating a timezone? ›

Calculating time zones is simple and involves adding or subtracting an hour for every 15 degrees of longitude.

Why is my iPhone picking up wrong time zone? ›

Allow your device to use its current location to determine the correct time zone. To do this, go to Settings > Privacy > Location Services > System Services and turn on Setting Time Zone. Check that your device is using the correct time zone in Settings > General > Date & Time > Time Zone.

Why is my automatic Date and time wrong? ›

Update Date & Time on Your Android Device

Tap Settings to open the Settings menu. Tap Date & Time. Tap Automatic. If this option is turned off, check that the correct Date, Time and Time Zone are selected.

Why is my phone not changing time zones automatically? ›

Turn on Android's automatic date/time setting. Do this through Settings > System > Date & time. Select the button next to Set time automatically to trigger it. If this is already turned on, turn it off, restart your phone, and then turn it back on.

What time will my iPhone change for Daylight Savings 2022? ›

In 2022, daylight saving time in the United States will begin on Sunday, March 13 and end on Sunday, November 6. On the former date, the time across the country will skip straight from 1:59 a.m. to 3 a.m. (except in Hawaii and Arizona, which don't make the adjustment).

How do I fix time zone problems? ›

Set time, date & time zone
  1. Open your phone's Clock app .
  2. Tap More. Settings. To pick your home time zone: Tap Home time zone. To automatically update your timezone: Tap Change date & time. Set time zone automatically. To update your timezone based on your location: Tap Change date & time Set time zone automatically.

How do you fix incorrect time zones? ›

Right-click on the time in the bottom-right of your screen and select Adjust Date/Time. A window will open. On the left side of the window select the Date & time tab. Then, under "Time zone" change to a different time zone and then change back to your current time zone.

How do you set the correct Date and time? ›

Set your phone's date and time manually
  1. On your Android phone, open Settings, then: Android 9 select System > Date and Time. Android 8 select General Management > Date and Time. ...
  2. Select Set date, then the desired date on the calendar, and tap Done.
  3. Select Set time, then set the desired time on the clock, and tap Done.

Why is the time on my phone not correct? ›

Turn Automatic Date Settings On and Off

Go to Settings > General management or System > Date and time and turn the Automatic date and time button off and then back on. These settings may vary slightly depending on your device. In most cases, this action should readjust your clock to the accurate time.

Why is my phone giving me the wrong time? ›

The most probable and common reason for this problem is that the time zone is incorrect, either because you manually set it incorrectly. When you have set the wrong time zone on your phone, even if the automatic time toggle is operational and set correctly, it will display the incorrect time.

How do you adjust to a new time zone? ›

How do I adjust to living in a new time zone?
  1. Slowly adapt to your new sleeping schedule. ...
  2. Rest for three days before you leave. ...
  3. Cut back on alcohol, caffeine and sugar. ...
  4. Drink plenty of water. ...
  5. Drink more water. ...
  6. Sleep or stay awake depending on arrival time. ...
  7. Reset your watch. ...
  8. Go to bed or eat breakfast depending on arrival time.
19 Dec 2014

How do I sync time zones? ›

Windows OS
  1. Right-click on the time in Taskbar and then click Adjust date/time .
  2. Click Internet Time tab, and then click Change settings… .
  3. Check the Synchronize with an Internet time server box and select an available Internet time server from the drop-down menu.
  4. Click Update now and then OK .
20 Nov 2019

Will my phone automatically spring forward? ›

Most smartphone clocks will automatically adjust, if the phone's software is up to date. However, if you went into the settings and changed any of the default settings, you may have to update your clock yourself once daylight saving time ends.


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