A beautiful world clock, showing the world as it is between day and night. Something you also get is a smooth mix of the daylight and nighttime images during dawn and twilight – something you would see in real life, but is missing from a lot of world clocks.

You can also zoom in to the map to get a better view of that area of the map. Try zooming into the area around dawn or dusk to see the transition occur in real time.

In addition, a dynamic "rolling" clock with your local date and time, as you have them defined on your device, are displayed below the map. You can also customize the appearance of the clock to display only date, hours, and minutes instead of including the constantly animated seconds.

A lot of machine-assisted localizations have been added as well, please comment if the localizations can be improved!

What's New

Version 6.1.1

Fixed a bug where the shadow area close to the pole was drawn incorrectly.

Ratings and Reviews

not too bad...


About the graphics: Yeah, they are not the greatest, but YES YOU CAN zoom in by using the 2 finger pinch/shrink. Maybe the developer could use the higher res pic from nasa. My main graphics complaint is with the night shading. In this app, the Antarctic region shows night as bands stepping from black to gray, but once you hit the countries, it's a gradual diffusion from black to gray and you don't get a sharp day/night line.

Accuracy: Perfect. I don't know if I can post a website, so google "day and night clock" and click on the first link. You will see that what you see on the web is what you see with the app. On the website, if you change the time and date to match that of the screenshot of this app uploaded in itunes, and set the timezone to CA, you'll get a perfect match. So, this app does what it says it does.

When the phone is locked: the app still runs in the background. When unlocked the app will update the day/night image in about 10 secs. This app seems to run in real time.

Annoyance: The scrolling seconds hand.

Using this app versus making the website I mentioned a webapp? Well, the webapp will give you MUCH better graphics, but this app has room for improvements and works offline.

Day-n-Night is AWESOME!

Austin Parents

I love this app! It's so pretty to see our Earth laid out flat and watch night's shadow creep around the world as the hours go by! I like to leave it on my desk so I can use it for an artistic clock. I like being able to zoom in on any country I choose. I would like to see that function simplified somehow. I wish the clock numbers were a little bigger, too. It's one of the best looking clocks I've seen in the App Store!

Good concept, not-so-good execution.


This app is fine if you don't expect too much from it. You CAN NOT zoom in on a specific country. The "zoom" feature is quite limited and the resolution is extremely poor. At best, this app is simply a clock showing elapsed time and a zoomed-out over-view of where the progression of night is on the globe.


Glenn Austin
63.6 MB
Requires iOS 8.0 or later. Compatible with iPhone, iPad, and iPod touch. Apple TV.
English, Danish, Dutch, Finnish, French, German, Icelandic, Italian, Portuguese, Russian, Spanish, Swedish
Age Rating
Rated 4+
© Copyright 2009-2017,


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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