6.3.90.900
Gregor: Dates and Times
Gregor is a date and time library for Racket. It provides:
data structures for representing dates, times, and their combination,
both with and without time zones;
generic functions for accessing these data structures;
date and time arithmetic, based on a proleptic Gregorian calendar and
the tz database; and
localized formatting and parsing, based on CLDR.