On 2024-02-01 17:35, brian.inglis--- via tz wrote:
I suspect the developer thought that as the Gregorian calendar has been unchanged for 400yr, projecting changes another 400yr should be adequate, as the calendar or rules are likely to be changed by then.
I rather think that the 400 years are enough to derive the transitions throughout the indefinite future by a simple lookup in TZif data: for years 2408..2807, use the transitions of years 2008..2407, ie, 400 years earlier, etc. If localtime() etc would do that, then they would implement the Rules as originally written.
Suggest patches to improve the behaviour or documentation.
I actually tried to do that: explicitly write the Rules with 2407 instead of max, so as to make it explicit that the Rules only apply for 402 years. Michael Deckers.