Daylight Savings Time Changes in United States 🇺🇸 (1939)
| Country: | United States |
| Capital: | Washington, D.C. |
| Abbreviations: | US, USA |
| IANA Time Zones: | 47 |
| Dial Code: | +1 |
Daylight Savings Time Schedule and Information
Before
01
:
59
After
03
:
00
30 APR
30 Apr 1939 - Daylight Saving Time Starts
When local standard time is about to reach Sunday, 30 April 1939, 01:59 clocks are turned forward 1 hour to
Sunday, 30 April 1939, 03:00 local daylight time instead.
Sunrise and sunset will be about 1 hour later on 30 Apr 1939 than the day before. There will be more light in the evening.
Also called Spring Forward.
Before
01
:
59
After
01
:
00
24 SEP
24 Sep 1939 - Daylight Saving Time Ends
When local standard time is about to reach Sunday, 24 September 1939, 01:59 clocks are turned backward 1 hour to
Sunday, 24 September 1939, 01:00 local standard time instead.
Sunrise and sunset will be about 1 hour earlier on 24 Sep 1939 than the day before. There will be more light in the morning.
Also called Fall Back.
Daylight Savings Time Schedules by States in United States (1939)
| State | DST Start (Spring) | DST End (Fall) |
|---|---|---|
| Alabama | 30 Apr 1939 | 24 Sep 1939 |
| Arkansas | 30 Apr 1939 | 24 Sep 1939 |
| Connecticut | 30 Apr 1939 | 24 Sep 1939 |
| Delaware | 30 Apr 1939 | 24 Sep 1939 |
| District of Columbia | 30 Apr 1939 | 24 Sep 1939 |
| Florida | 30 Apr 1939 | 24 Sep 1939 |
| Georgia | 30 Apr 1939 | 24 Sep 1939 |
| Illinois | 30 Apr 1939 | 24 Sep 1939 |
| Iowa | 30 Apr 1939 | 24 Sep 1939 |
| Kansas | 30 Apr 1939 | 24 Sep 1939 |
| Kentucky | 30 Apr 1939 | 24 Sep 1939 |
| Louisiana | 30 Apr 1939 | 24 Sep 1939 |
| Maine | 30 Apr 1939 | 24 Sep 1939 |
| Maryland | 30 Apr 1939 | 24 Sep 1939 |
| Massachusetts | 30 Apr 1939 | 24 Sep 1939 |
| Minnesota | 30 Apr 1939 | 24 Sep 1939 |
| Mississippi | 30 Apr 1939 | 24 Sep 1939 |
| Missouri | 30 Apr 1939 | 24 Sep 1939 |
| Nebraska | 30 Apr 1939 | 24 Sep 1939 |
| New Hampshire | 30 Apr 1939 | 24 Sep 1939 |
| New Jersey | 30 Apr 1939 | 24 Sep 1939 |
| New York | 30 Apr 1939 | 24 Sep 1939 |
| North Carolina | 30 Apr 1939 | 24 Sep 1939 |
| North Dakota | 30 Apr 1939 | 24 Sep 1939 |
| Ohio | 30 Apr 1939 | 24 Sep 1939 |
| Oklahoma | 30 Apr 1939 | 24 Sep 1939 |
| Pennsylvania | 30 Apr 1939 | 24 Sep 1939 |
| Rhode Island | 30 Apr 1939 | 24 Sep 1939 |
| South Carolina | 30 Apr 1939 | 24 Sep 1939 |
| South Dakota | 30 Apr 1939 | 24 Sep 1939 |
| Tennessee | 30 Apr 1939 | 24 Sep 1939 |
| Texas | 30 Apr 1939 | 24 Sep 1939 |
| Vermont | 30 Apr 1939 | 24 Sep 1939 |
| Virginia | 30 Apr 1939 | 24 Sep 1939 |
| West Virginia | 30 Apr 1939 | 24 Sep 1939 |
| Wisconsin | 30 Apr 1939 | 24 Sep 1939 |
States in United States that do not observe Daylight Savings Time
DST Changes Summary for United States
| Date | Year | Change | Time | Details |
|---|---|---|---|---|
| 09 Mar | 2025 | Forward 1 hour | 01:59 ➜ 03:00 | Daylight Saving Start |
| 02 Nov | 2025 | Back 1 hour | 01:59 ➜ 01:00 | Daylight Saving End |
| 08 Mar | 2026 | Forward 1 hour | 01:59 ➜ 03:00 | Daylight Saving Start |
| 01 Nov | 2026 | Back 1 hour | 01:59 ➜ 01:00 | Daylight Saving End |
| 14 Mar | 2027 | Forward 1 hour | 01:59 ➜ 03:00 | Daylight Saving Start |
| 07 Nov | 2027 | Back 1 hour | 01:59 ➜ 01:00 | Daylight Saving End |
| 12 Mar | 2028 | Forward 1 hour | 01:59 ➜ 03:00 | Daylight Saving Start |
| 05 Nov | 2028 | Back 1 hour | 01:59 ➜ 01:00 | Daylight Saving End |
| 11 Mar | 2029 | Forward 1 hour | 01:59 ➜ 03:00 | Daylight Saving Start |
| 04 Nov | 2029 | Back 1 hour | 01:59 ➜ 01:00 | Daylight Saving End |
| 10 Mar | 2030 | Forward 1 hour | 01:59 ➜ 03:00 | Daylight Saving Start |
| 03 Nov | 2030 | Back 1 hour | 01:59 ➜ 01:00 | Daylight Saving End |
Read More About Daylight Savings Time
Common Questions about Daylight Savings Time Changes in United States
Does United States use Daylight Saving Time in 1939?
Yes, United States observes Daylight Saving Time during the 1939 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.
Note that this does not apply to the entire country, as 15 states do not participate in the change.
When do the clocks change next in United States?
The next scheduled time transition in United States will take place on Sunday, 30 April 1939. At 01:59 local time, clocks will be turned forward by 1 hour. This specific change marks the transition to daylight saving time starts.
Does all of United States follow the same time change schedule?
No. While the majority of United States observes Daylight Saving Time, there are regional exceptions. Currently, 15 states (including Alaska, Arizona and others) stay on standard time year-round.
How will the next transition affect the day in United States?
Following the shift on 30 Apr 1939, you will notice that there is more light in the evening compared to the day before. While the transition may temporarily disrupt sleep patterns, the primary goal of this forward shift is to maximize usable daylight for the population.