Hello...
At first, thank you for your work. It is very
important for us, astrologers.
We decided to write you because we made
part of an astrological discussion group called Ptolomeo. Some people
wrote asking about Argentina timezones few weeks ago and all of the argentine
astrologers told that 'Shanks, Elsie data and other english sources have
errors'. So, Dra. Amelia Urbina, member of the group, has contacted the Naval
Observatory of Buenos Aires and she got the following results. Please see the
next images:
From Naval Observatory of Buenos Aires -
Argentina:




If you take a look at your data, Argentina have some DST
periods from 1975 to 1987, but according to the Naval Observatory official data
(and these have a total acceptance by the argentine astrologers), there was no
time changes in these years, as shown below:
Elsie data from
tzdata2001d.tar.gz (with coincidence to Shanks data and his International
Atlas):
Rule Arg 1974 only - Jan 23 0:00 1:00 S
Rule Arg 1974 only -
May 1 0:00 0 -
Rule Arg 1974 1976 - Oct Sun>=1 0:00 1:00 S
Rule
Arg 1975 1977 - Apr Sun>=1 0:00 0 -
Rule Arg 1985 only - Nov 2 0:00
1:00 S
Rule Arg 1986 only - Mar 14 0:00 0 -
Rule Arg 1986 1987 - Oct 25
0:00 1:00 S
Rule Arg 1987 only - Feb 13 0:00 0 -
Rule Arg 1988 only -
Feb 7 0:00 0 -
Rule Arg 1988 only - Dec 1 0:00 1:00
S
However, at the Naval Observatory of Buenos
Aires report we have for the same range of time:

It's an official document from Argentina Naval Army, and I am
quite totally sure those data are 100% trustful...
I really hope this
info could be useful for your very good job!!
Have a nice
day!
From:
Dra. Amelia Urbina draurbina@arnet.com.ar
Ptolomeo
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