Time
4 minQuiz at the end
Time Units
| Unit | Equivalent |
|---|---|
| 1 minute | 60 seconds |
| 1 hour | 60 minutes = 3,600 seconds |
| 1 day | 24 hours |
| 1 week | 7 days |
| 1 year | 365 days (366 in a leap year) |
12-Hour vs 24-Hour Clock
12-hour clock: uses am (midnight to noon) and pm (noon to midnight) 24-hour clock: runs from 00:00 to 23:59
| 12-hour | 24-hour |
|---|---|
| 12:00 am (midnight) | 00:00 |
| 6:30 am | 06:30 |
| 12:00 pm (noon) | 12:00 |
| 2:35 pm | 14:35 |
| 11:59 pm | 23:59 |
Convert pm to 24-hour: add 12 to the hour (for pm times after 12:59)
Calculating Time Durations
Work in steps crossing through whole hours:
Film starts 19:50, lasts 2 hours 25 minutes:
- 19:50 + 2 hours = 21:50
- 21:50 + 25 minutes = 22:15
Converting Mixed Time Units
3 days 5 hours to hours:
- 3 Γ 24 = 72 hours + 5 hours = 77 hours
2 hours 45 minutes to minutes:
- 2 Γ 60 = 120 + 45 = 165 minutes