When time is adjusted forward, it changes from Eastern Standard Time (EST) to Daylight Saving Time (DST).
The timeshift from EST to DST occurs at 2:00 am. Before 2:00 am, Security Center uses the EST (UTC-5). Starting from 2:00 am,
it uses the DST (UTC-4), as shown in the following table:
| EST | Time change | DST | |||
|---|---|---|---|---|---|
| Local time | 12:00 am | 1:00 am | 2:00 am = 3:00 am | 4:00 am | 5:00 am |
| Offset (hours) | -5 | -5 | -4 | -4 | -4 |
| UTC | 5:00 am | 6:00 am | 7:00 am | 8:00 am | 9:00 am |
Because the time was adjusted forward, the following behaviors can be observed when playing
back video or exporting archives:
- The time shifts forward by one hour in the timeline. At 1:59:59 am, the displayed time advances to 3:00 am.
- There are no archives to export between 2:00 am and 3:00 am, because this period was skipped.