Conversions

Convert to and from standard time and different types of decimal time.

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Standard Time (local):
Excel/PC Serial Date (local):
Excel/Mac Serial Date (local):
Fractional DOM (local):
Fractional DOM (UT):
NASA/NORAD TLE Date (UT):
Julian Date (UT+12):
Modified Julian Date (UT):
French Republican Time (local):
French Republican Time (TMP):
Swatch @Time (BMT):
Unix Time:

Time Intervals

Decimal to Standard

1.0d =	24h 0m 0s
0.1d =	2h 24m 0s
0.01d =	14m 24s
0.001d =	1m 26.4s
0.0001d =	8.64s
0.00001d =	864ms
0.000001d =	86.4ms

Standard to Decimal

24h =	1.0d
1h =	0.0416d
30m =	0.02083d
15m =	0.010416d
5m =	0.003472d
1m =	0.000694d
1s =	0.0000115740d