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Gregor: a date and time library for Racket

Jon Zeppieri <>

To install:

raco pkg install gregor

To use:

(require gregor)

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.

Read the documentation

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