How Many Days in a Year

365 days (or 366 in leap years) — complete explanation

⚡Quick Answer

Regular year = 365 days. Leap year = 366 days. Leap years: divisible by 4 (except century years, unless divisible by 400). Next leap year: 2028.

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365days

Regular year = 365 days. Leap year = 366 days. The extra day is February 29th.

💡2024, 2028, 2032 are leap years. Easy pattern: Olympic years!

Earth orbits the Sun in 365.2422 days. The extra ~¼ day adds up, so we add a day every 4 years to stay aligned with seasons.

💡Without leap years, seasons would drift by 24 days per century!

Divisible by 4 = leap year. EXCEPT century years (1900, 2100) unless divisible by 400 (2000 was a leap year).

💡2000 ✓ | 2100 ✗ | 2400 ✓ — century rule catches most people off guard!

1 year = 365 days = 8,760 hours = 525,600 minutes = 31,536,000 seconds. Leap year adds 1 day (24h/1,440min/86,400sec).

💡525,600 minutes — that's the song from Rent!

2028, then 2032, 2036, etc. Leap years are divisible by 4 (with century exceptions).

Century years must be divisible by 400. 2100 ÷ 400 = 5.25, so no leap day. This fine-tunes the calendar.

52 weeks + 1 day (or +2 in leap years). That's why your birthday shifts by 1-2 days each year.

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