Daylight Savings Time Changes in Puerto Rico 🇵🇷 (1945)
| Country: | Puerto Rico |
| Capital: | San Juan |
| Abbreviations: | PR, PRI |
| IANA Time Zones: | 1 |
| Dial Code: | ++1-787 and 1-939 |
Daylight Savings Time Schedule and Information
Before
01
:
59
After
01
:
00
30 SEP
30 Sep 1945 - Daylight Saving Time Ends
When local standard time is about to reach Sunday, 30 September 1945, 01:59 clocks are turned backward 1 hour to
Sunday, 30 September 1945, 01:00 local standard time instead.
Sunrise and sunset will be about 1 hour earlier on 30 Sep 1945 than the day before. There will be more light in the morning.
Also called Fall Back.
Daylight Savings Time Schedules by Regions in Puerto Rico (1945)
| Region | DST Start (Spring) | DST End (Fall) |
|---|---|---|
| Adjuntas | - | 30 Sep 1945 |
| Aguada | - | 30 Sep 1945 |
| Aguadilla | - | 30 Sep 1945 |
| Aguas Buenas | - | 30 Sep 1945 |
| Aibonito | - | 30 Sep 1945 |
| Añasco | - | 30 Sep 1945 |
| Arecibo | - | 30 Sep 1945 |
| Arroyo | - | 30 Sep 1945 |
| Barceloneta | - | 30 Sep 1945 |
| Barranquitas | - | 30 Sep 1945 |
| Bayamón | - | 30 Sep 1945 |
| Cabo Rojo | - | 30 Sep 1945 |
| Caguas | - | 30 Sep 1945 |
| Camuy | - | 30 Sep 1945 |
| Canóvanas | - | 30 Sep 1945 |
| Carolina | - | 30 Sep 1945 |
| Cataño | - | 30 Sep 1945 |
| Cayey | - | 30 Sep 1945 |
| Ceiba | - | 30 Sep 1945 |
| Ciales | - | 30 Sep 1945 |
| Cidra | - | 30 Sep 1945 |
| Coamo | - | 30 Sep 1945 |
| Comerío | - | 30 Sep 1945 |
| Corozal | - | 30 Sep 1945 |
| Culebra | - | 30 Sep 1945 |
| Dorado | - | 30 Sep 1945 |
| Fajardo | - | 30 Sep 1945 |
| Florida | - | 30 Sep 1945 |
| Guánica | - | 30 Sep 1945 |
| Guayama | - | 30 Sep 1945 |
| Guayanilla | - | 30 Sep 1945 |
| Guaynabo | - | 30 Sep 1945 |
| Gurabo | - | 30 Sep 1945 |
| Hatillo | - | 30 Sep 1945 |
| Hormigueros | - | 30 Sep 1945 |
| Humacao | - | 30 Sep 1945 |
| Isabela | - | 30 Sep 1945 |
| Jayuya | - | 30 Sep 1945 |
| Juana Díaz | - | 30 Sep 1945 |
| Juncos | - | 30 Sep 1945 |
| Lajas | - | 30 Sep 1945 |
| Lares | - | 30 Sep 1945 |
| Las Marías | - | 30 Sep 1945 |
| Las Piedras | - | 30 Sep 1945 |
| Loíza | - | 30 Sep 1945 |
| Luquillo | - | 30 Sep 1945 |
| Manatí | - | 30 Sep 1945 |
| Maricao | - | 30 Sep 1945 |
| Maunabo | - | 30 Sep 1945 |
| Mayagüez | - | 30 Sep 1945 |
| Moca | - | 30 Sep 1945 |
| Morovis | - | 30 Sep 1945 |
| Naguabo | - | 30 Sep 1945 |
| Naranjito | - | 30 Sep 1945 |
| Orocovis | - | 30 Sep 1945 |
| Patillas | - | 30 Sep 1945 |
| Peñuelas | - | 30 Sep 1945 |
| Ponce | - | 30 Sep 1945 |
| Quebradillas | - | 30 Sep 1945 |
| Rincón | - | 30 Sep 1945 |
| Río Grande | - | 30 Sep 1945 |
| Sabana Grande | - | 30 Sep 1945 |
| Salinas | - | 30 Sep 1945 |
| San Germán | - | 30 Sep 1945 |
| San Juan | - | 30 Sep 1945 |
| San Lorenzo | - | 30 Sep 1945 |
| San Sebastián | - | 30 Sep 1945 |
| Santa Isabel | - | 30 Sep 1945 |
| Toa Alta | - | 30 Sep 1945 |
| Toa Baja | - | 30 Sep 1945 |
| Trujillo Alto | - | 30 Sep 1945 |
| Utuado | - | 30 Sep 1945 |
| Vega Alta | - | 30 Sep 1945 |
| Vega Baja | - | 30 Sep 1945 |
| Vieques | - | 30 Sep 1945 |
| Villalba | - | 30 Sep 1945 |
| Yabucoa | - | 30 Sep 1945 |
| Yauco | - | 30 Sep 1945 |
DST Changes Summary for Puerto Rico
| Date | Year | Change | Time | Details |
|---|---|---|---|---|
| 30 Sep | 1945 | Back 1 hour | 01:59 ➜ 01:00 | Daylight Saving End |
Read More About Daylight Savings Time
Common Questions about Daylight Savings Time Changes in Puerto Rico
Does Puerto Rico use Daylight Saving Time in 1945?
Yes, Puerto Rico observes Daylight Saving Time during the 1945 calendar year. The country follows the practice of shifting clocks to better align waking hours with the available evening sunlight during the spring and summer months.
When do the clocks change next in Puerto Rico?
The next scheduled time transition in Puerto Rico will take place on Sunday, 30 September 1945. At 01:59 local time, clocks will be turned backward by 1 hour. This specific change marks the transition to daylight saving time ends.
Does all of Puerto Rico follow the same time change schedule?
Yes, Puerto Rico follows a single, unified schedule. Every region across the country transitions to and from Daylight Saving Time at the exact same moment, ensuring a consistent time standard nationwide.
How will the next transition affect the day in Puerto Rico?
Following the shift on 30 Sep 1945, you will notice that there is more light in the morning compared to the day before. While the transition may temporarily disrupt sleep patterns, the primary goal of this backward shift is to maximize usable daylight for the population.