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Diffstat (limited to 'Doc/lib/libcalendar.tex')
| -rw-r--r-- | Doc/lib/libcalendar.tex | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/Doc/lib/libcalendar.tex b/Doc/lib/libcalendar.tex index 222e2db..bf0c85b 100644 --- a/Doc/lib/libcalendar.tex +++ b/Doc/lib/libcalendar.tex @@ -15,10 +15,12 @@ convention). Use \function{setfirstweekday()} to set the first day of the week to Sunday (6) or to any other weekday. Parameters that specify dates are given as integers. -Most of these functions rely on the platform provided \function{mktime()}. -Therefore, valid argument values may vary from system to system. -On Unix, valid years are typically between \code{1970} and \code{2037}, -but may be work between \code{1902} and \code{2037}. +Most of these functions rely on the \module{datetime} module which +uses an idealized calendar, the current Gregorian calendar indefinitely +extended in both directions. This matches the definition of the +"proleptic Gregorian" calendar in Dershowitz and Reingold's book +"Calendrical Calculations", where it's the base calendar for all +computations. \begin{funcdesc}{setfirstweekday}{weekday} Sets the weekday (\code{0} is Monday, \code{6} is Sunday) to start |