Dates & time
Golden hour & blue hour calculator
Calculate blue hour, golden hour, sunrise and sunset from the selected date, coordinates and time zone.
Golden hour & blue hour calculator
Find blue-hour and golden-hour windows for photography, video or outdoor planning.
City search uses the Open-Meteo geocoding service.
Result
Calendar and solar results are calculated locally in your browser.
Was this tool useful?
How does this tool work?
Find blue-hour and golden-hour windows for photography, video or outdoor planning.
The engine calculates when the Sun crosses −6°, −4° and +6° elevation. Bethemesh uses −6° to −4° for blue hour and −4° to +6° for golden hour; other apps may use different thresholds. The result depends on the conventions of the calendar or phenomenon being calculated. The engine validates the entered values, applies the relevant conversion rules or astronomical formulas, and returns a localized result. For solar calculations, geographic position, time zone and date can materially change the output.
How to use this tool
Enter the inputs
Provide the requested date and values.
Adjust the context
Choose the conversion direction or location when required.
Read the result
The calculation runs locally and can be repeated with new values.
Use cases
Conversion and verification
Get a value that would be tedious to compute manually.
Planning
Prepare a date, photo session or observation from precise inputs.
Documented comparison
Compare a date, light window or measurement with another source while keeping the calculation inputs and assumptions visible.
Tips and best practices
- Check the date and time zone for Sun-dependent calculations.
- For historical or official use, consider the local conventions described by the tool.
- Keep the inputs you used when you need to compare the result with another source or reproduce it later.
Frequently asked questions
Is the calculation sent to a server?
No. The engine runs directly in your browser.
Can I change the values and calculate again?
Yes. Adjust the inputs and run the calculation again immediately.
Why can the result differ from another website?
Two services may use slightly different conventions, astronomical thresholds or historical rules. Check the parameters and assumptions stated by each tool before comparing their results.
Related tools
Keep going with these tools
Tools similar or complementary to this one.
Similar tools
Calculate shadow length and direction from location, date, time and object height.
Dates & timeNewUse this tool
Convert a date and time between two time zones.
Dates & timeNewFeaturedUse this tool
Calculate Rahu Kalam from date, location, sunrise and sunset.
Dates & timeNewUse this tool
Read next
GuideConcepts and technologiesBeginner
Rahu Kalam: how the daily period is calculated
Understand the traditional Rahu Kalam calculation from local sunrise and sunset, eight daylight segments and the weekday mapping.
17 September 20263 min
GuideBest practicesBeginner
Shabbat times: sunset, candle-lighting and Havdalah explained
Learn why Shabbat times depend on city and date, why candle-lighting is set before Friday sunset and why Havdalah conventions can produce different end times.
17 September 20263 min
GuideBest practicesBeginner
Date and time calculations: a practical guide
Date differences, durations, business days, ISO weeks, recurrences and formats: choose the right date and time calculation.
7 September 20262 min
GuideBest practicesIntermediate
How to calculate business hours between two dates and times
Understand the difference between business days, business hours and working time, then calculate useful time inside opening hours.
8 September 20262 min