# Uruguay
# From Paul Eggert (1993-11-18):
# Uruguay wins the prize for the strangest peacetime manipulation of the rules.
# From Shanks & Pottenger:
# Rule  NAME    FROM    TO  TYPE    IN  ON  AT  SAVE    LETTER/S
# Whitman gives 1923 Oct 1; go with Shanks & Pottenger.
Rule    Uruguay 1923    only    -   Oct  2   0:00   0:30    HS
Rule    Uruguay 1924    1926    -   Apr  1   0:00   0   -
Rule    Uruguay 1924    1925    -   Oct  1   0:00   0:30    HS
Rule    Uruguay 1933    1935    -   Oct lastSun  0:00   0:30    HS
# Shanks & Pottenger give 1935 Apr 1 0:00 & 1936 Mar 30 0:00; go with Whitman.
Rule    Uruguay 1934    1936    -   Mar Sat>=25 23:30s  0   -
Rule    Uruguay 1936    only    -   Nov  1   0:00   0:30    HS
Rule    Uruguay 1937    1941    -   Mar lastSun  0:00   0   -
# Whitman gives 1937 Oct 3; go with Shanks & Pottenger.
Rule    Uruguay 1937    1940    -   Oct lastSun  0:00   0:30    HS
# Whitman gives 1941 Oct 24 - 1942 Mar 27, 1942 Dec 14 - 1943 Apr 13,
# and 1943 Apr 13 "to present time"; go with Shanks & Pottenger.
Rule    Uruguay 1941    only    -   Aug  1   0:00   0:30    HS
Rule    Uruguay 1942    only    -   Jan  1   0:00   0   -
Rule    Uruguay 1942    only    -   Dec 14   0:00   1:00    S
Rule    Uruguay 1943    only    -   Mar 14   0:00   0   -
Rule    Uruguay 1959    only    -   May 24   0:00   1:00    S
Rule    Uruguay 1959    only    -   Nov 15   0:00   0   -
Rule    Uruguay 1960    only    -   Jan 17   0:00   1:00    S
Rule    Uruguay 1960    only    -   Mar  6   0:00   0   -
Rule    Uruguay 1965    1967    -   Apr Sun>=1   0:00   1:00    S
Rule    Uruguay 1965    only    -   Sep 26   0:00   0   -
Rule    Uruguay 1966    1967    -   Oct 31   0:00   0   -
Rule    Uruguay 1968    1970    -   May 27   0:00   0:30    HS
Rule    Uruguay 1968    1970    -   Dec  2   0:00   0   -
Rule    Uruguay 1972    only    -   Apr 24   0:00   1:00    S
Rule    Uruguay 1972    only    -   Aug 15   0:00   0   -
Rule    Uruguay 1974    only    -   Mar 10   0:00   0:30    HS
Rule    Uruguay 1974    only    -   Dec 22   0:00   1:00    S
Rule    Uruguay 1976    only    -   Oct  1   0:00   0   -
Rule    Uruguay 1977    only    -   Dec  4   0:00   1:00    S
Rule    Uruguay 1978    only    -   Apr  1   0:00   0   -
Rule    Uruguay 1979    only    -   Oct  1   0:00   1:00    S
Rule    Uruguay 1980    only    -   May  1   0:00   0   -
Rule    Uruguay 1987    only    -   Dec 14   0:00   1:00    S
Rule    Uruguay 1988    only    -   Mar 14   0:00   0   -
Rule    Uruguay 1988    only    -   Dec 11   0:00   1:00    S
Rule    Uruguay 1989    only    -   Mar 12   0:00   0   -
Rule    Uruguay 1989    only    -   Oct 29   0:00   1:00    S
# Shanks & Pottenger say no DST was observed in 1990/1 and 1991/2,
# and that 1992/3's DST was from 10-25 to 03-01.  Go with IATA.
Rule    Uruguay 1990    1992    -   Mar Sun>=1   0:00   0   -
Rule    Uruguay 1990    1991    -   Oct Sun>=21  0:00   1:00    S
Rule    Uruguay 1992    only    -   Oct 18   0:00   1:00    S
Rule    Uruguay 1993    only    -   Feb 28   0:00   0   -
# From Eduardo Cota (2004-09-20):
# The Uruguayan government has decreed a change in the local time....
# http://www.presidencia.gub.uy/decretos/2004091502.htm
Rule    Uruguay 2004    only    -   Sep 19   0:00   1:00    S
# From Steffen Thorsen (2005-03-11):
# Uruguay's DST was scheduled to end on Sunday, 2005-03-13, but in order to
# save energy ... it was postponed two weeks....
# http://www.presidencia.gub.uy/_Web/noticias/2005/03/2005031005.htm
Rule    Uruguay 2005    only    -   Mar 27   2:00   0   -
# From Eduardo Cota (2005-09-27):
# http://www.presidencia.gub.uy/_Web/decretos/2005/09/CM%20119_09%2009%202005_00001.PDF
# This means that from 2005-10-09 at 02:00 local time, until 2006-03-12 at
# 02:00 local time, official time in Uruguay will be at GMT -2.
Rule    Uruguay 2005    only    -   Oct  9   2:00   1:00    S
Rule    Uruguay 2006    only    -   Mar 12   2:00   0   -
# From Jesper Nørgaard Welen (2006-09-06):
# http://www.presidencia.gub.uy/_web/decretos/2006/09/CM%20210_08%2006%202006_00001.PDF
#
# From Steffen Thorsen (2015-06-30):
# ... it looks like they will not be using DST the coming summer:
# http://www.elobservador.com.uy/gobierno-resolvio-que-no-habra-cambio-horario-verano-n656787
# http://www.republica.com.uy/este-ano-no-se-modificara-el-huso-horario-en-uruguay/523760/
# From Paul Eggert (2015-06-30):
# Apparently restaurateurs complained that DST caused people to go to the beach
# instead of out to dinner.
# From Pablo Camargo (2015-07-13):
# http://archivo.presidencia.gub.uy/sci/decretos/2015/06/cons_min_201.pdf
# [dated 2015-06-29; repeals Decree 311/006 dated 2006-09-04]
Rule    Uruguay 2006    2014    -   Oct Sun>=1   2:00   1:00    S
Rule    Uruguay 2007    2015    -   Mar Sun>=8   2:00   0   -
# Zone  NAME        GMTOFF  RULES   FORMAT  [UNTIL]
Zone America/Montevideo -3:44:44 -  LMT 1898 Jun 28
            -3:44:44 -  MMT 1920 May  1 # Montevideo MT
            -3:30   Uruguay UY%sT   1942 Dec 14 # Uruguay Time
            -3:00   Uruguay UY%sT