Paraguay timezone rules
Jesper Norgaard Welen
jnorgard at prodigy.net.mx
Sun Jan 2 22:09:52 UTC 2005
There are several sources that claim that Paraguay made
a timezone rule change in autumn 2004, which not only
changed the date that Paraguay entered DST in 2004
but will also affect DST dates in 2005.
Steffen Thorsen on http://www.timeanddate.com claimed
that Paraguay entered DST in autumn 2004 Sunday the
17.th. of October and not Sunday 5.th. of September as
would have been predicted by the TZ database. Now in
2005 it claims that Paraguay will enter DST
Sunday the 16.th. of October 2005 and not Sunday 4.th.
of September as it would be according to the TZ database.
I tried to verify this with some internet searches, but
could only find one source that interestingly is
updating the TZ rules in a local version.
The source is http://avi.alkalay.net/linux/zoneinfo/Paraguay.txt
and it claims the following rule for Paraguay:
# Rule NAME FROM TO TYPE IN ON AT SAVE
Rule Paraguay 2002 2003 - Apr Sun<=7 0:00 0 S
Rule Paraguay 2002 2003 - Sep Sun<=7 0:00 1 D
Rule Paraguay 2004 only - Apr Sun<=7 0:00 0 S
Rule Paraguay 2004 max - Oct Sun>=15 0:00 1 D
Rule Paraguay 2005 max - Mar Sun>=8 0:00 0 S
The rule for "2004 to max" about when Paraguay enters DST, is
consistent with Steffen Thorsens dates for 2004 and 2005.
However, it also claims that Paraguay leaves DST at different
dates now in 2005, at Second Sunday of March instead of First
Sunday of April. If this is true, even Steffen will have to
change his database.
I wonder if any of the members of the TZ mailing list can
confirm these facts. A quote from the exact text of the timezone
decrees corresponding would be the best, of course.
Jesper Nørgaard Welen
Jesper Nørgaard Welen
Email: jnorgard at Prodigy.Net.mx
Project Leader (Líder de Proyecto) Software
CIMMYT - Centro Internacional de Mejoramiento de Maíz y Trigo
Dirección: CIMMYT Int. c/o Jesper Nørgaard
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