| Current: | CDT — Central Daylight Time |
|---|---|
| Next Change: | CST — Central Standard Time |
| Current Offset: | UTC/GMT -5 hours |
| Difference: | 1 hour behind Washington DC |
2025 Time Zones - Ozone
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
The graph above illustrates clock changes in Ozone during 2025.
Time Changes in Ozone Over the Years
Daylight Saving Time (DST) changes do not necessarily occur on the same date every year.
| Year | Date & Time | Abbreviation | Time Change | Offset After |
|---|---|---|---|---|
| 2024 | Sun, Mar 10 at 2:00 am | CST → CDT | +1 hour (DST start) | UTC-5h |
| Sun, Nov 3 at 2:00 am | CDT → CST | -1 hour (DST end) | UTC-6h | |
| 2025 | Sun, Mar 9 at 2:00 am | CST → CDT | +1 hour (DST start) | UTC-5h |
| Sun, Nov 2 at 2:00 am | CDT → CST | -1 hour (DST end) | UTC-6h | |
| 2026 | Sun, Mar 8 at 2:00 am | CST → CDT | +1 hour (DST start) | UTC-5h |
| Sun, Nov 1 at 2:00 am | CDT → CST | -1 hour (DST end) | UTC-6h | |
| 2027 | Sun, Mar 14 at 2:00 am | CST → CDT | +1 hour (DST start) | UTC-5h |
| Sun, Nov 7 at 2:00 am | CDT → CST | -1 hour (DST end) | UTC-6h | |
| 2028 | Sun, Mar 12 at 2:00 am | CST → CDT | +1 hour (DST start) | UTC-5h |
| Sun, Nov 5 at 2:00 am | CDT → CST | -1 hour (DST end) | UTC-6h | |
| * All times are local Ozone time. Next time change is highlighted. | ||||
Data for the years before 1970 is not available for Ozone, however, we have earlier time zone history for Chicago available.
More Information
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Ozone
USA
2:0017pm
Monday, April 21, 2025