# Leap year, Time

A leap year (or intercalary or bissextile year) is a year containing one additional day (or, in the case of lunisolar calendars, a month) in order to keep the calendar year synchronized with the astronomical or seasonal year. Because seasons and astronomical events do not repeat in a whole number of days, a calendar that had the same number of days in each year would, over time, drift with respect to the event it was supposed to track. By occasionally inserting (or intercalating) an additional day or month into the year, the drift can be corrected.

List of all Leap year to other time units individual converters.
Convert  Leap year

### Metric, SI

Yoctosecond ys 3162240000×1022
Zeptosecond zs 3162240000×1019
Attosecond as 3162240000×1016
Femtosecond fs 3162240000×1013
Picosecond ps 3162240000×1010
Nanosecond ns 3162240000×107
Microsecond µs 3162240000×104
Millisecond ms 3162240000×101
Centisecond cs 3162240000
Decisecond ds 316224000
Second s 31622400
Decasecond das 3162240
Hectosecond hs 316224
Kilosecond ks 31622.4
Megasecond Ms 31.6224
Gigasecond Gs 0.0316
Terasecond Ts 3.1622×10-5
Petasecond Ps 3.1622×10-8
Exasecond Es 3.1622×10-11
Zettasecond Zs 3.1622×10-14
Yottasecond Ys 3.1622×10-17

### Common units

Minute min 527040
Hour h 8784
Day d 366
Week 52.2857
Fortnight 26.1429
Month 12.0329
Year y 1.0027
Century 0.01
Millennium 0.001

### Sidereal time

Sidereal second 31708979.4659
Sidereal minute 528482.991
Sidereal hour 8808.0499
Sidereal day 367.0021

### Other

Shake 3162240000×106
Synodic month 12.3939
Julian year 1.0021
Tropical year 1.0021
Septennial 0.1432
Octennial 0.1253
Novennial 0.1114
Quindecennial 0.0668
Quinquennial 0.2005

### Result formatting:

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