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By Lunarium Ltd

This app is only available on the App Store for iOS devices.


Hours is an app for calculating planetary hours according to the traditional astrological rules. The app will calculate planetary hours for:

1) Your current location, defined by GPS.
2) Any of over 42,000 of predefined locations around the world from the database shipped with the app.
3) Any custom location you might want to define, specifying its latitude and longitude.

You can select any date from January 1st, 1900.

Hours also displays an extensive list of attributes for each planet.

What's New in Version 3.0.1

The current hour is now highlighted. Minor user interface improvements. Fixed a bug that was causing a crash in some situations when selecting a location.

iPhone Screenshots

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Customer Reviews

*UPDATE*Good update, needs improvement

Older version: I have been using this app for sometime, but for Traditional Astrology the Planetary Day rulership starts over at sunset.
So on Monday the moon rules the rising hour and the setting hour.
This is a staple of all Traditional methods, perhaps an option can be added.
New version: Here is an explanation of the proper calculation desired by Traditional Astrologers (via Renaissance Astrology);
"get your local sunrise and sunset times from the newspaper or the US Naval Observatory. Take the time from sunrise to sunset and divide by twelve to get the length of each planetary hour for the day. Take the time from sunset to sunrise the next day and divide that by twelve for the length of each planetary hour by night. Then starting with the planet that rules the day, e.g. Saturn for Saturday, follow the Chaldean order and assign the proper planet to each planetary hour of the day and night that you have just calculated."


I would have given this 5 stars but the only issue is that the planetary times are a little off.

For example, Mars hour ends, for example at 7:04 and then it has Mercury hour beginning at 7:04. Unless it measures seconds too, this gives misleading info. It's like that for all of this app's planetary times.

It SHOULD be that Mars hour ends at 7:03 and Mercury begins at 7:04. I still have to use a planetary hours calculator I found online.

I can continue to use this app. It's sharp and has very nice and helpful description of planets and their astrological meanings. I'll just have to start an activity 3-5 minutes into a desired hour to be sure the start time is correct. When it's all said and done, I like the app.

The app doesn't work

The app it doesn't work when I use Arabic language. I hope you fix it as soon.

View in iTunes
  • $4.99
  • Category: Reference
  • Updated:
  • Version: 3.0.1
  • Size: 44.5 MB
  • Language: English
  • Seller:

Compatibility: Requires iOS 7.0 or later. Compatible with iPhone, iPad, and iPod touch.

Customer Ratings

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