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:
|Local time||12:00 am||1:00 am||2:00 am = 3:00 am||4:00 am||5:00 am|
|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.