"When Is Day in the UK?" — Understanding Daylight Variation

Daylight in the United Kingdom: Extreme Seasonal Swing

The question "When is day?" reflects the UK's high latitude (50°–60°N), which creates dramatic differences in daylight length.

London (51.5°N) — Representative

Scotland: Even More Extreme

• Edinburgh (56°N): 17h 36m (Jun) → 6h 58m (Dec)
• Lerwick, Shetland (60°N): 19h 00m (Jun) → 5h 49m (Dec) — "simmer dim" twilight all night in summer.

Daylight Saving Time (British Summer Time)

Clocks forward last Sunday Mar (01:00 → 02:00); back last Sunday Oct. Shifts evening light later in summer.

Practical Answer

"Day" in the UK is highly seasonal. In midwinter, it's essentially 8 AM–4 PM in London; in midsummer, 5 AM–9:30 PM. Check timeanddate.com for exact daily times by location.