|
Los
cambios de hora en la Argentina (actualizado al 15-03-2009):
Los
cambios de hora en la Capital Federal de la Argentina (Ciudad
de Buenos Aires) son como se detalla a continuación (el valor
dado bajo la denominación “Huso” debe ser sumado a la
hora oficial para lograr la GMT o TU):
|
0 hs. del Dia
|
|
24 hs. del Dia
|
Huso
|
|
|
hasta
|
24-11-1894
|
+3h 53m 44s (hora local)
|
|
25-11-1894
|
a
|
30-04-1920
|
+4h 16m 48s
|
|
1-05-1920
|
a
|
30-11-1930
|
+4h
|
|
1-12-1930
|
a
|
31-03-1931
|
+3
|
|
1-04-1931
|
a
|
14-10-1931
|
+4
|
|
15-10-1931
|
a
|
29-02-1932
|
+3
|
|
1-03-1932
|
a
|
31-10-1932
|
+4
|
|
1-11-1932
|
a
|
28-02-1933
|
+3
|
|
1-03-1933
|
a
|
31-10-1933
|
+4
|
|
1-11-1933
|
a
|
28-02-1934
|
+3
|
|
1-03-1934
|
a
|
31-10-1934
|
+4
|
|
1-11-1934
|
a
|
28-02-1935
|
+3
|
|
1-03-1935
|
a
|
31-10-1935
|
+4
|
|
1-11-1935
|
a
|
29-02-1936
|
+3
|
|
1-03-1936
|
a
|
31-10-1936
|
+4
|
|
1-11-1936
|
a
|
28-02-1937
|
+3
|
|
1-03-1937
|
a
|
31-10-1937
|
+4
|
|
1-11-1937
|
a
|
28-02-1938
|
+3
|
|
1-03-1938
|
a
|
31-10-1938
|
+4
|
|
1-11-1938
|
a
|
28-02-1939
|
+3
|
|
1-03-1939
|
a
|
31-10-1939
|
+4
|
|
1-11-1939
|
a
|
29-02-1940
|
+3
|
|
1-03-1940
|
a
|
30-06-1940
|
+4
|
|
1-07-1940
|
a
|
14-06-1941
|
+3
|
|
15-06-1941
|
a
|
14-10-1941
|
+4
|
|
15-10-1941
|
a
|
31-07-1943
|
+3
|
|
1-08-1943
|
a
|
14-10-1943
|
+4
|
|
15-10-1943
|
a
|
28-02-1946
|
+3
|
|
1-03-1946
|
a
|
30-09-1946
|
+4
|
|
1-10-1946
|
a
|
30-09-1963
|
+3
|
|
1-10-1963
|
a
|
14-12-1963
|
+4
|
|
15-12-1963
|
a
|
29-02-1964
|
+3
|
|
1-03-1964
|
a
|
14-10-1964
|
+4
|
|
15-10-1964
|
a
|
28-02-1965
|
+3
|
|
1-03-1965
|
a
|
14-10-1965
|
+4
|
|
15-10-1965
|
a
|
28-02-1966
|
+3
|
|
1-03-1966
|
a
|
14-10-1966
|
+4
|
|
15-10-1966
|
a
|
1-04-1967
|
+3
|
|
2-04-1967
|
a
|
30-09-1967
|
+4
|
|
1-10-1967
|
a
|
6-04-1968
|
+3
|
|
7-04-1968
|
a
|
5-10-1968
|
+4
|
|
6-10-1968
|
a
|
5-04-1969
|
+3
|
|
6-04-1969
|
a
|
4-10-1969
|
+4
|
|
5-10-1969
|
a
|
22-01-1974
|
+3
|
|
23-01-1974
|
a
|
30-04-1974
|
+2
|
|
1-05-1974
|
a
|
30-11-1988
|
+3
|
|
1-12-1988
|
a
|
4-03-1989
|
+2
|
|
5-03-1989
|
a
|
14-10-1989
|
+3
|
|
15-10-1989
|
a
|
3-03-1990
|
+2
|
|
4-03-1990
|
a
|
20-10-1990
|
+3
|
|
21-10-1990
|
a
|
2-03-1991
|
+2
|
|
3-03-1991
|
a
|
19-10-1991
|
+3
|
|
20-10-1991
|
a
|
29-02-1992
|
+2
|
|
1-03-1992
|
a
|
17-10-1992
|
+3
|
|
18-10-1992
|
a
|
6-03-1993
|
+2
|
|
7-03-1993
|
a
|
29-12-2007
|
+3
|
|
30-12-2007
|
a
|
15-03-2008
|
+2
|
|
16-03-2008
|
a
|
18-10-2008
|
+3
|
|
19-10-2008
|
a
|
14-03-2009
|
+2
|
|
15-03-2009
|
a
|
|
+3
|
Cabe
aclarar que antes del 25-11-1894 la Hora Local
era difundida en el lugar por iglesias y entidades públicas.
Desde esa fecha, se fija como Hora
Oficial
la del meridiano del Observatorio de Córdoba
(+4h 16m 48,2s). A partir del 1-5-1920 el país se adhiere al Sistema Internacional de
Husos Horarios, quedando en el huso +4h.
Desde el 12-11-1923 el Observatorio Naval asume la
responsabilidad de la Hora Oficial. A partir del 1-12-1930
comenzó a regir en forma discontinua el sistema de adelanto
por Hora de Verano,
y a partir del 23-1-1974
se aplicó, en algunos casos, la Doble Hora de Verano.
Al respecto, cuando dicho sistema de la doble hora de verano
quiso continuar a fines del ´80 y principios del ´90, hubo
importantes disensos entre el gobierno central y los gobiernos
provinciales, por lo que cada provincia dispuso entonces
diversas fechas de cambio, algunas no cambiaron, y todo estuvo
caótica y contradictoriamente documentado por los diarios y
decretos de la época.
El astrólogo argentino Roberto Martori,
entrañable colaborador del C.A.B.A., realizó una vasta
investigación para determinar la situación en cada
provincia, aunque lamentablemente su fallecimiento, ocurrido
en Marzo de 1992, dejó relativamente inconclusa dicha tarea,
la cual hasta la fecha ha sido imposible completar a la
perfección. Recordando que muchas provincias tuvieron poca o
ninguna diferencia con las fechas arriba dadas para Capital
Federal, a continuación volcamos los datos por él recabados.
Por otro lado, durante el año 2004 algunas provincias,
en distintos momentos, volvieron por un breve lapso al huso
horario +4h, tornando luego al decretado por el
Gobierno Nacional, con la doble hora de adelanto que
comenzó a regir para el verano desde fines de 2007 incluidos.
|
Provincia de Buenos Aires
|
|
04-10-1990
|
a
|
20-10-1990
|
+3
|
|
21-10-1990
|
a
|
2-3-1991
|
+2
|
|
3-3-1991
|
a
|
19-10-1991
|
+3
|
|
20-10-1991
|
a
|
29-02-1992
|
+2
|
|
01-03-1992
|
a
|
17-10-1992
|
+3
|
|
18-10-1992
|
a
|
06-03-1993
|
+2
|
|
07-03-1993
|
a
|
29-12-2007
|
+3
|
|
30-12-2007
|
a
|
15-03-2008
|
+2
|
|
16-03-2008
|
a
|
18-10-2008
|
+3
|
|
19-10-2008
|
a
|
14-03-2009
|
+2
|
|
15-03-2009
|
a
|
|
+3
|
|
Catamarca
|
|
04-03-1990
|
a
|
20-10-1990
|
+3
|
|
21-10-1990
|
a
|
10-11-1990
|
+2
|
|
11-11-1990
|
a
|
2-3-1991
|
+3
|
|
03-03-1991
|
a
|
04-05-1991
|
+4
|
|
05-05-1991
|
a
|
19-10-1991
|
+3
|
|
20-10-1991
|
a
|
29-02-1992
|
+2
|
|
01-03-1992
|
a
|
17-10-1992
|
+3
|
|
18-10-1992
|
a
|
06-03-1993
|
+2
|
|
07-03-1993
|
a
|
31-05-2004
|
+3
|
|
1-6-2004
|
a
|
19-06-2004
|
+4
|
|
20-06-2004
|
a
|
29-12-2007
|
+3
|
|
30-12-2007
|
a
|
15-03-2008
|
+2
|
|
16-03-2008
|
a
|
|
+3
|
|
Córdoba
|
|
04-03-1990
|
a
|
20-10-1990
|
+3
|
|
21-10-1990
|
a
|
1-12-1990
|
+2
|
|
2-12-1990
|
a
|
19-10-1991
|
+3
|
|
20-10-1991
|
a
|
29-02-1992
|
+2
|
|
01-03-1992
|
a
|
29-12-2007
|
+3
|
|
30-12-2007
|
a
|
15-03-2008
|
+2
|
|
16-03-2008
|
a
|
18-10-2008
|
+3
|
|
19-10-2008
|
a
|
14-03-2009
|
+2
|
|
15-03-2009
|
a
|
|
+3
|
|
Corrientes
|
|
04-03-1990
|
a
|
20-10-1990
|
+3
|
|
21-10-1990
|
a
|
3-1-1991
|
+2
|
|
4-1-1991
|
a
|
19-10-1991
|
+3
|
|
20-10-1991
|
a
|
29-02-1992
|
+2
|
|
01-03-1992
|
a
|
29-12-2007
|
+3
|
|
30-12-2007
|
a
|
15-03-2008
|
+2
|
|
16-03-2008
|
a
|
18-10-2008
|
+3
|
|
19-10-2008
|
a
|
14-03-2009
|
+2
|
|
15-03-2009
|
a
|
|
+3
|
|
Chaco
|
|
04-03-1990
|
a
|
20-10-1990
|
+3
|
|
21-10-1990
|
a
|
3-1-1991
|
+2
|
|
4-1-1991
|
a
|
19-10-1991
|
+3
|
|
20-10-1991
|
a
|
29-02-1992
|
+2
|
|
01-03-1992
|
a
|
29-12-2007
|
+3
|
|
30-12-2007
|
a
|
15-03-2008
|
+2
|
|
16-03-2008
|
a
|
18-10-2008
|
+3
|
|
19-10-2008
|
a
|
14-03-2009
|
+2
|
|
15-03-2009
|
a
|
|
+3
|
|
Chubut
|
|
04-03-1990
|
a
|
20-10-1990
|
+3
|
|
21-10-1990
|
a
|
9-12-1990
|
+2
|
|
10-12-1990
|
a
|
19-10-1991
|
+3
|
|
20-10-1991
|
a
|
29-02-1992
|
+2
|
|
01-03-1992
|
a
|
31-05-2004
|
+3
|
|
1-6-2004
|
a
|
19-06-2004
|
+4
|
|
20-06-2004
|
a
|
29-12-2007
|
+3
|
|
30-12-2007
|
a
|
15-03-2008
|
+2
|
|
16-03-2008
|
a
|
|
+3
|
|
Entre Ríos
|
|
04-03-1990
|
a
|
20-10-1990
|
+3
|
|
21-10-1990
|
a
|
31-12-1990
|
+2
|
|
1-1-1991
|
a
|
19-10-1991
|
+3
|
|
20-10-1991
|
a
|
29-02-1992
|
+2
|
|
01-03-1992
|
a
|
29-12-2007
|
+3
|
|
30-12-2007
|
a
|
15-03-2008
|
+2
|
|
16-03-2008
|
a
|
18-10-2008
|
+3
|
|
19-10-2008
|
a
|
14-03-2009
|
+2
|
|
15-03-2009
|
a
|
|
+3
|
|
Formosa
|
|
04-03-1990
|
a
|
20-10-1990
|
+3
|
|
21-10-1990
|
a
|
3-1-1991
|
+2
|
|
4-1-1991
|
a
|
19-10-1991
|
+3
|
|
20-10-1991
|
a
|
29-02-1992
|
+2
|
|
01-03-1992
|
a
|
29-12-2007
|
+3
|
|
30-12-2007
|
a
|
15-03-2008
|
+2
|
|
16-03-2008
|
a
|
18-10-2008
|
+3
|
|
19-10-2008
|
a
|
14-03-2009
|
+2
|
|
15-03-2009
|
a
|
|
+3
|
|
Jujuy
|
|
04-03-1990
|
a
|
28-02-1991
|
+3
|
|
01-03-1991
|
a
|
19-10-1991
|
+4
|
|
20-10-1991
|
a
|
29-02-1992
|
+2
|
|
01-03-1992
|
a
|
23-05-2004
|
+3
|
|
24-05-2004
|
a
|
25-09-2004
|
+4
|
|
30-12-2007
|
a
|
15-03-2008
|
+2
|
|
16-03-2008
|
a
|
|
+3
|
|
La Pampa
|
|
04-03-1990
|
a
|
20-10-1990
|
+3
|
|
21-10-1990
|
a
|
30-11-1990
|
+2
|
|
1-12-1990
|
a
|
29-12-2007
|
+3
|
|
20-10-1991
|
a
|
29-02-1992
|
+2
|
|
01-03-1992
|
a
|
29-12-2007
|
+3
|
|
30-12-2007
|
a
|
15-03-2008
|
+2
|
|
16-03-2008
|
a
|
|
+3
|
|
La Rioja
|
|
04-03-1990
|
a
|
20-10-1990
|
+3
|
|
21-10-1990
|
a
|
10-11-1990
|
+2
|
|
11-11-1990
|
a
|
28-02-1991
|
+3
|
|
1-3-1991
|
a
|
19-10-1991
|
+4
|
|
20-10-1991
|
a
|
29-02-1992
|
+2
|
|
01-03-1992
|
a
|
31-05-2004
|
+3
|
|
1-6-2004
|
a
|
19-06-2004
|
+4
|
|
?-2004 20-06-2004
|
a
|
29-12-2007
|
+3
|
|
30-12-2007
|
a
|
15-03-2008
|
+2
|
|
16-03-2008
|
a
|
|
+3
|
|
Mendoza
|
|
04-03-1990
|
a
|
28-2-1991
|
+3
|
|
1-3-1991
|
a
|
19-10-1991
|
+4
|
|
20-10-1991
|
a
|
29-02-1992
|
+2
|
|
01-03-1992
|
a
|
22-05-2004
|
+3
|
|
23-05-2004
|
a
|
25-09-2004
|
+4
|
|
26-09-2004
|
a
|
29-12-2007
|
+3
|
|
30-12-2007
|
a
|
15-03-2008
|
+2
|
|
16-03-2008
|
a
|
|
+3
|
|
Misiones
|
|
04-03-1991
|
a
|
20-10-1990
|
+3
|
|
21-10-1990
|
a
|
29-12-1990
|
+2
|
|
30-12-1990
|
a
|
19-10-1991
|
+3
|
|
20-10-1991
|
a
|
29-02-1992
|
+2
|
|
01-03-1992
|
a
|
29-12-2007
|
+3
|
|
30-12-2007
|
a
|
15-03-2008
|
+2
|
|
16-03-2008
|
a
|
18-10-2008
|
+3
|
|
19-10-2008
|
a
|
14-03-2008
|
+2
|
|
15-03-2009
|
a
|
|
|
|
Neuquen
|
|
04-03-1990
|
a
|
20-10-1990
|
+3
|
|
21-10-1990
|
a
|
1-12-1990
|
+2
|
|
2-12-1990
|
a
|
19-10-1991
|
+3
|
|
20-10-1991
|
a
|
29-02-1992
|
+2
|
|
01-03-1992
|
a
|
29-12-2007
|
+3
|
|
30-12-2007
|
a
|
15-03-2008
|
+2
|
|
16-03-2008
|
a
|
|
+3
|
|
Río Negro
|
|
04-03-1990
|
a
|
20-10-1990
|
+3
|
|
21-10-1990
|
a
|
30-11-1990
|
+2
|
|
1-12-1990
|
a
|
19-10-1991
|
+3
|
|
20-10-1991
|
a
|
29-02-1992
|
+2
|
|
01-03-1992
|
a
|
29-12-2007
|
+3
|
|
30-12-2007
|
a
|
15-03-2008
|
+2
|
|
16-03-2008
|
a
|
|
+3
|
|
San Juan
|
|
04-03-1990
|
a
|
19-10-1991
|
+3
|
|
20-10-1991
|
a
|
29-02-1992
|
+2
|
|
01-03-1992
|
a
|
29-05-2004
|
+3
|
|
30-05-2004
|
a
|
24-07-2004
|
+4
|
|
25-07-2004
|
a
|
29-12-2007
|
+3
|
|
30-12-2007
|
a
|
15-03-2008
|
+2
|
|
16-03-2008
|
a
|
|
+3
|
|
San Luis
|
|
04-03-1990
|
a
|
20-10-1990
|
+3
|
|
21-10-1990
|
a
|
10-11-1990
|
+2
|
|
11-11-1990
|
a
|
28-02-1991
|
+3
|
|
1-3-1991
|
a
|
19-10-1991
|
+4
|
|
20-10-1991
|
a
|
29-02-1992
|
+2
|
|
01-03-1992
|
a
|
31-05-1992
|
+3
|
|
1-6-2004
|
a
|
30-08-2004
|
+4
|
|
01-09-2004
|
a
|
29-12-2007
|
+3
|
|
30-12-2007
|
a
|
20-01-2008
|
+2
|
|
21-01-2008
|
a
|
14-03-2009
|
+3
|
|
15-03-2009
|
a
|
|
|
|
Santa Cruz
|
|
04-03-1990
|
a
|
20-10-1990
|
+3
|
|
21-10-1990
|
a
|
16-11-1990
|
+2
|
|
17-01-1991
|
a
|
19-10-1991
|
+3
|
|
20-10-1991
|
a
|
29-02-1992
|
+2
|
|
01-03-1992
|
a
|
17-10-1992
|
+3
|
|
18-10-1992
|
a
|
06-03-1993
|
+2
|
|
07-03-1993
|
a
|
31-05-2004
|
+3
|
|
1-6-2004
|
a
|
19-06-2004
|
+4
|
|
20-06-2004
|
a
|
29-12-2007
|
+3
|
|
30-12-2007
|
a
|
15-03-2008
|
+2
|
|
16-03-2008
|
a
|
|
+3
|
|
Santa Fe
|
|
04-03-1990
|
a
|
20-10-1990
|
+3
|
|
21-10-1990
|
a
|
30-12-1990
|
+2
|
|
31-12-1990
|
a
|
19-10-1991
|
+3
|
|
20-10-1991
|
a
|
29-02-1992
|
+2
|
|
01-02-1992
|
a
|
29-12-2007
|
+3
|
|
30-12-2007
|
a
|
15-03-2008
|
+2
|
|
16-03-2008
|
a
|
18-10-2008
|
+3
|
|
19-10-2008
|
a
|
14-03-2009
|
+2
|
|
15-03-2009
|
a
|
|
+3
|
|
Santiago del Estero
|
|
04-03-1990
|
a
|
20-10-1990
|
+3
|
|
21-10-1990
|
a
|
10-11-1990
|
+2
|
|
11-11-1990
|
a
|
19-10-1991
|
+3
|
|
20-10-1991
|
a
|
29-03-1992
|
+2
|
|
01-03-1992
|
a
|
29-12-2007
|
+3
|
|
30-12-2007
|
a
|
15-03-2008
|
+2
|
|
16-03-2008
|
a
|
18-10-2008
|
+3
|
|
19-10-2008
|
a
|
14-03-2008
|
+2
|
|
15-03-2008
|
a
|
|
+3
|
|
Salta
|
|
04-03-1990
|
a
|
20-10-1990
|
+3
|
|
21-10-1990
|
a
|
02-11-1990
|
+2
|
|
03-11-1990
|
a
|
29-12-2007
|
+3
|
|
30-12-2007
|
a
|
15-03-2008
|
+2
|
|
16-03-2008
|
a
|
|
+3
|
|
Tierra del Fuego, Antártida e Islas del
Atlántico Sur
|
|
04-03-1990
|
a
|
20-10-1990
|
+3
|
|
21-10-1990
|
a
|
2-3-1991
|
+2
|
|
3-3-1991
|
a
|
19-10-1991
|
+3
|
|
20-10-1991
|
a
|
29-02-1992
|
+2
|
|
01-03-1992
|
a
|
17-10-1992
|
+3
|
|
18-10-1992
|
a
|
06-03-1993
|
+2
|
|
07-03-1993
|
a
|
29-05-2004
|
+3
|
|
30-04-2004
|
a
|
19-06-2004
|
+4
|
|
20-06-2004
|
a
|
29-12-2007
|
+3
|
|
30-12-2007
|
a
|
15-03-2008
|
+2
|
|
16-03-2008
|
a
|
|
+3
|
|
Tucumán
|
|
04-03-1990
|
a
|
20-10-1990
|
+3
|
|
21-10-1990
|
a
|
27-10-1990
|
+2
|
|
28-10-1990
|
a
|
31-05-2004
|
+3
|
|
1-6-2004
|
a
|
12-06-2004
|
+4
|
|
13-06-2004
|
a
|
29-12-2007
|
+3
|
|
30-12-2007
|
a
|
15-03-2008
|
+2
|
|
16-03-2008
|
a
|
18-10-2008
|
+3
|
|
19-10-2008
|
a
|
14-03-2009
|
+2
|
|
15-03-2009
|
a
|
|
+3
|
|
