Adding just another thought.
As you are mixing basically two
different ways of dealing with date&time (
Date::Manip and Perl core's
localtime), I guess there are also real chances that the two might disagree on what the local timezone is (and as such, how they would deal with the epoch).
Date:Manip says that
---
Date::Manip must be able to determine the timezone the user is in.
It does this by looking in the following places:
$Date::Manip::TZ (set with Date_Init or in Manip.pm)
$ENV{TZ}
the unix ‘date‘ command (if available)
$main::TZ
/etc/TIMEZONE
/etc/timezone
At least one of these should contain a timezone
in one of the supported forms.
If none do by default, the TZ variable must be set with Date_Init.
---
Seems quite possible that the two might disagree - which would make 'last sunday' - which is taken at midnight - easily become 'Saturday' even for a slighty different TZ. (If so, it might be that 'last sunday noon' wouldn't have run into troubles).
I'm really curious now about what you'll find.
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