User:Muaddeeb/Templates/units of Time
| Common units of time | ||
|---|---|---|
| Unit | Size | Notes |
| Nanosecond | 1/1,000,000,000 second | |
| Microsecond | 10−6 second | |
| Millisecond | 1/1,000 second | |
| Second | SI base unit | |
| Minute | 60 seconds | |
| Hour | 60 minutes | |
| Day | 24 hours | |
| Week | 7 days | |
| Fortnight | 14 days; 2 weeks | |
| Month | 28 to 31 days | |
| Quarter | 3 months | |
| Year | 12 months; 365 days | |
| Tropical year | 365.24219 days | Average |
| Gregorian year | 365.2425 days | |
| Olympiad | 4 years | |
| Lustrum | 5 years | |
| Decade | 10 years | |
| Score | 20 years | |
| Generation | 25 years | approximate |
| Century | 100 years | |
| Millennium | 1,000 years | |