Sunrise & Sunset Calculator
Calculate exact sunrise and sunset times for any latitude, longitude, and date using solar position equations.
Quick Answer
Enter your latitude, longitude, and date below to get exact sunrise and sunset times. At 40°N (New York, Madrid, Beijing), today's sunrise is around 5:30-6:30 AM and sunset is around 7:30-8:30 PM in spring/summer. Results are accurate to within 1-2 minutes.
Sunrise & Sunset Times for Major Cities (Mid-Year Reference)
| City | Lat | Jun 21 Sunrise | Jun 21 Sunset | Dec 21 Sunrise | Dec 21 Sunset | Day Length Range |
|---|---|---|---|---|---|---|
| New York | 40.7°N | 5:25 AM | 8:31 PM | 7:16 AM | 4:32 PM | 9h 15m - 15h 6m |
| London | 51.5°N | 4:43 AM | 9:21 PM | 8:04 AM | 3:53 PM | 7h 50m - 16h 38m |
| Tokyo | 35.7°N | 4:25 AM | 7:01 PM | 6:47 AM | 4:28 PM | 9h 45m - 14h 35m |
| Sydney | 33.9°S | 7:01 AM | 4:53 PM | 5:37 AM | 8:09 PM | 10h 3m - 14h 25m |
| Singapore | 1.4°N | 6:59 AM | 7:12 PM | 7:01 AM | 7:04 PM | 12h 0m - 12h 12m |
| Reykjavik | 64.1°N | 2:55 AM | 12:04 AM | 11:22 AM | 3:30 PM | 4h 7m - 21h 8m |
Times are approximate local standard time. Sydney shows Southern Hemisphere seasons (Jun = winter, Dec = summer).
How It Works
Enter your latitude, longitude, and date. The calculator uses solar declination and the equation of time to compute the hour angle at sunrise and sunset, then converts to local time.
Formula
Frequently Asked Questions
How is sunrise time calculated?
Sunrise occurs when the sun's center crosses the horizon. The calculation uses solar declination (based on day of year) and latitude to find the hour angle, then converts to local time.
Why does sunrise time vary by location?
Sunrise depends on latitude and longitude. Higher latitudes see more extreme seasonal variation. Longitude determines your offset within a time zone.
How accurate is this sunrise sunset calculator?
Results are typically accurate to within 1-2 minutes for sunrise and sunset times. Minor variations can occur due to local terrain, altitude, and atmospheric conditions that affect refraction. The calculator accounts for the sun's apparent diameter and standard atmospheric refraction (0.833 degrees).