(use-modules (srfi srfi-19))
@end example
+@strong{Caution}: The current code in this module incorrectly extends
+the Gregorian calendar leap year rule back prior to the introduction
+of those reforms in 1582 (or the appropriate year in various
+countries). The Julian calendar was used prior to 1582, and there
+were 10 days skipped for the reform, but the code doesn't implement
+that.
+
+This will be fixed some time. Until then calculations for 1583
+onwards are correct, but prior to that any day/month/year and day of
+the week calculations are wrong.
+
@menu
* SRFI-19 Introduction::
* SRFI-19 Time::