Note: Only some parts of Mexico used DST in 1931.
Forward 1 hour
When local standard time was about to reach
Wednesday, April 1, 1931, 12:00:00 midnight clocks were turned forward 1 hour to
Wednesday, April 1, 1931, 1:00:00 am local daylight time instead.
Sunrise and sunset were about 1 hour later on Apr 1, 1931 than the day before. There was more light in the evening.
Back 1 hour
When local daylight time was about to reach
Wednesday, September 30, 1931, 12:00:00 midnight clocks were turned backward 1 hour to
Tuesday, September 29, 1931, 11:00:00 pm local standard time instead.
Sunrise and sunset were about 1 hour earlier on Sep 30, 1931 than the day before. There was more light in the morning.
The states of Sonora (yellow area on the left) and Quintana Roo (yellow area on the right) do not observe DST.
DST in States and Federal Districts in Mexico in 1931 (32 in total, 1 where all observe DST, 31 which don't observe DST)
|Aguascalientes||No DST||Guerrero||No DST||Quintana Roo||No DST|
|Baja California||Apr 1 - Sep 30||Hidalgo||No DST||San Luis Potosí||No DST|
|Baja California Sur||No DST||Jalisco||No DST||Sinaloa||No DST|
|Campeche||No DST||Michoacán||No DST||Sonora||No DST|
|Chiapas||No DST||Morelos||No DST||Tabasco||No DST|
|Chihuahua||No DST||México||No DST||Tamaulipas||No DST|
|Ciudad de México||No DST||Nayarit||No DST||Tlaxcala||No DST|
|Coahuila de Zaragoza||No DST||Nuevo León||No DST||Veracruz||No DST|
|Colima||No DST||Oaxaca||No DST||Yucatán||No DST|
|Durango||No DST||Puebla||No DST||Zacatecas||No DST|
|Guanajuato||No DST||Querétaro||No DST|