Location and date
Use custom coordinates
Coordinates identify the exact place used for sunrise and sunset. Choose a city above if you do not know them.
Plan your dayFree · no account
Find the planetary hour for any time and place.
See which planet rules each part of the day, what that hour supports, and where a little extra care may help.
Direct interactive resultMethod and limits includedPrivate by default
Your day will appear as 24 timed windows.
Enter a date, coordinates, and time zone to see each ruler, the best use of the hour, and a practical caution.
Before you startInputs, calculation, limits, and saving+
What to enter
Required: Enter date and place.
Optional: No birth details are needed for traditional planetary hours.
Example input — not your result: Example: July 16, 2026 · Shanghai, China.
What you get
Calculate traditional day and night planetary hours from local sunrise and sunset. The result includes location based, 24 windows, ruler themes.
How it is calculated
Splits local daylight and night into twelve unequal hours each, beginning from local sunrise and following the traditional ruler sequence.
Data time: The result records its calculation time. Date-based tools use the selected date; location-based tools also show the resolved local time zone.
Result limits
This shows shared sky or traditional timing context. It is not a personal prediction unless a tool explicitly compares the sky with a birth chart.
Missing result
If a result is missing, check that every required field is complete and that the selected date or data source contains a supported result.
How to fix an error: Check the date format, then enter a specific City, Country suggestion. If the time is unknown, follow the tool's unknown-time instruction instead of inventing a time.
Next step and saving
Do next: Use one planetary hour for an activity that matches its traditional theme, then note whether the timing was practical.
This page can be printed, but it does not create a new saved reading unless it displays a generated result.
What you'll get
Daily timeline
24 hours
12 daylight and 12 nighttime windows
Personal to place
Local
Built from sunrise and sunset where you are
Useful for
Planning
Work, conversations, creativity, rest, and reflection
Keep exploring
The calculation method, result limits, missing-data guidance, and error fixes are kept together in the “Before you start” section above.
HELP
Questions people ask before they start
Short answers about inputs, limits, and how to read the result.
Why are planetary hours not always 60 minutes?
They divide the time from sunrise to sunset, and sunset to the next sunrise, into twelve parts. Their length changes with the season and location.
Do I need an exact birth time?
No. Planetary hours use the selected date and location, not a birth chart.
Is one planetary hour always good or bad?
No. Each ruler describes a style of activity. The practical question is whether that style fits what you are trying to do.