MATLAB Date Converter
Convert between MATLAB datenum serial date numbers and calendar dates. MATLAB uses day 1 as January 1, year 0000.
Integer part = date, decimal part = time (0.5 = 12:00 noon)
Result
31-Dec--1 00:00:00
ISO: -000001-12-31T00:00:00.000Z
Julian Date: 1721058.5
Year: -1
Month: 12
Day: 31
Hour: 0
Minute: 0
Second: 0
About MATLAB Datenum
MATLAB uses a serial date number (datenum) that represents dates as the number of days from January 1, year 0000 in the proleptic Gregorian calendar. The integer part is the date, and the fractional part represents the time of day. Use datenum() to create and datestr() to convert back to a human-readable format.
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Editorial Note
MyCalcBuddy Editorial Team
This page is maintained as an educational calculator reference.
Formula Source: Standard Mathematical References
by Various