Skip to content

Sunset Time Calculator

Estimate sunrise and sunset times based on date and UK latitude.

UK: 50-59°N

How We Calculate This

Solar Calculation

Declination = 23.45 x sin(360/365 x (day - 81))

Hour angle = arccos(-tan(lat) x tan(declination))

Daylight hours = 2 x Hour angle / 15

Note: These are approximate solar times. Actual clock times vary with longitude and BST/GMT.

Frequently Asked Questions

Last updated: February 2026

All calculations are estimates. Always verify conditions and use proper safety equipment outdoors.