How Does Daylight Saving Time Impact Usable Daylight?
Daylight Saving Time (DST) shifts standard clocks forward one hour during warmer months to extend evening daylight. This calculator computes daylight duration, solar twilight, and sunrise/sunset times across US latitudes.
Day length depends on the sun's position around the Earth's tilted axis. Declination formula: D = 23.5 × sin(360/365 × (day − 80)). For England (latitude ~50–56°), day length is approximately 7–8 hours at winter solstice and 16–17 hours at summer solstice.
Enerji tasarrufu boyutu: Daylight saving moves clocks forward by 1 hour in spring, giving an extra hour of evening daylight and reducing the need for artificial lighting. Estimated household daily savings are around 0.06 kWh. The UK observes British Summer Time (BST), clocks go forward in March and back in October.
This tool serves as an accurate daylight reference for athletics, aviation, agriculture, construction scheduling, and golden-hour photography.