This is a list of calendar and timekeeping around the world.
Calendar
| name
|
region
|
description
|
| Gregorian calendar
|
world
|
- 365 or 366 days in a year
- days for months: 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31
- 1 leap day every 4 years, except when the year is divisible by 100 and not divisible by 400; the leap day is placed in the second month
|
| Chinese calendar
|
China
|
- 12 or 13 months in a year
- 29 or 30 days in a month, determined by the moon phase; New Moon is the first day of a month
- The month with winter solstice is the first month
- 7 leap months every 19 years; Leap month is the first month without a solar term of an even number
|
Timekeeping
| name
|
region
|
description
|
| Chinese
|
China
|
- 1 day is divided by 12 units 時 evenly
- 1 時 is divided into 2 parts: 初, 正
- Every 初 and 正 is divided by 4 units 刻 evenly
|
