Sunrise & Sunset Calculator
Estimate sunrise, sunset, solar noon and daylight duration from your coordinates, date and UTC offset.
Numerical approximation, rounded to minutes. Uses one noon-based solar position for the reference date and a level horizon. Errors can grow near polar transitions. Terrain, height, atmospheric conditions and weather can change observations; visibility is not guaranteed.
A QUICK WALKTHROUGH
How to use this tool
- Enter decimal coordinates and the reference date.
- Enter the UTC offset that applies on that date.
- Calculate and read the full event dates and approximation limits.
Time zone: UTC offset in hours (−12 to +14)
Supply the offset active on this date, including daylight saving if applicable. No city lookup or automatic legal time-zone rules. Full dates show events crossing midnight; the pair belongs to the solar cycle centered on the reference date, not a civil-day event list.
Estimated daylight duration
Numerical approximation, rounded to minutes. Uses one noon-based solar position for the reference date and a level horizon. Errors can grow near polar transitions. Terrain, height, atmospheric conditions and weather can change observations; visibility is not guaranteed.
GOOD TO KNOW
Common questions
Does the tool detect my time zone?
No. You supply coordinates and the UTC offset, including any daylight-saving adjustment.