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.
Calculate time interval between two dates
This online calculator outputs day of week for given date
Using a modification of the Gauss algorithm to calculate Orthodox Easter date
This online calculator converts VARIANT DATE (double) value to datetime string.