iPhone Screenshots


* Featured by Apple as "New & Noteworthy" *
The most complete twilight and Moon Calendar.
It provides you with the location specific sun / moon data for any date, worldwide.
This is a nice planning tool for all outdoor activities.

- Moon rise / Moon set Times
- Moon Phase Data
- Civil Twilight Begin / End
- Total Daylight times
- Nautical Twilight Begin / End
- Astronomical Twilight Begin / End
- Sun rise / Sun set times
- Auto GPS / Select from Map
- Day information / monthly view
- Select any date from Calendar
- Select any location from map
- Any Date / Any Location

Planing go hiking with your friends? Want to know the dawn / dust time for that day? How about at night, what the moon illumination % will be?

When you download "twilight and Moon Calendar", you will get all the information you need to plan your trip.

All information are calculated precisely realtime based on your location and timezone. No network connection is needed.

What’s New

Version 1.3

Optimize for iOS8.

Ratings and Reviews

3.0 out of 5
4 Ratings

4 Ratings

Poochpa ,

Best of its kind, but needs iOS 9 fix

Long-time user of this app for astronomy planning. No other app gives you sun, moon die and set times, with astronomical twilight times in calendar form. Needs iOS 9 update as another reviewer noted to fix missing 2nd digit in calendar dates.

Suejdisjjziejjxjejdi ,

Awesome app but needs update to iOS11 compatibility

Literally a most essential app for amateur astronomers to plan observing sessions.

I hope the developer takes the time to update it to iOS11, otherwise it's the end of the line for this one.

gregofissaquah ,

App crashes every time

Ipod Itouch software version 6.1.6 and the current version of this app are not compatible.
it crashes every time I try to use this app.
Previous versions were wonderful and worked very well. It no longer appears to be compatible


2.7 MB

Requires iOS 6.0 or later. Compatible with iPhone, iPad, and iPod touch.



Age Rating


  • Family Sharing

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

More By This Developer

You May Also Like