Calculate your age with minute precision
Adds and subtracts a specified time interval to the specified date
Displays Gregorian calendar date corresponding to Julian Day Number
This online calculator computes the result of addition/subtraction of the given number of days to the given date.
This online calculator converts VARIANT DATE (double) value to datetime string.
This online calculator outputs day of week for given date
Using a modification of the Gauss algorithm to calculate Orthodox Easter date
Calculate time interval between two dates