Flag for Puerto Rico Clock Changes in San Juan, Puerto Rico in 1942

Last change: 1945
Sep
30
1 hour Back

Sep 30, 1945, 2:00 am

Start DST: Sunday, May 3, 1942
 1 hour forward

Location of San JuanLocation

May 3

Forward 1 hour

May 3, 1942 - Daylight Saving Time Started

When local standard time was about to reach
Sunday, May 3, 1942, 12:00:00 midnight clocks were turned forward 1 hour to
Sunday, May 3, 1942, 1:00:00 am local daylight time instead.

Sunrise and sunset were about 1 hour later on May 3, 1942 than the day before. There was more light in the evening.

Also called Spring Forward, Summer Time, and Daylight Savings Time.

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Other years: 1942 | 1943 | 1944 | 1945 |

Daylight Saving Time in Other Years

DST changes do not necessarily occur on the same date every year.

YearDST Start (Clock Forward)DST End (Clock Backward)
1925 — 1941DST not observed
1942Sunday, May 3, 12:00 midnightNo DST End
1943 — 1944DST observed all year
1945No DST StartSunday, September 30, 2:00 am
1946 — 1949DST not observed
All times are local for San Juan.

Detailed time zone and clock changes in San Juan