Defining twilight schedules - Security Center 5.9

Security Center Administrator Guide 5.9

Applies to
Security Center 5.9
Last updated
Content type
Guides > Administrator guides
Security Center

To define a set of time constraints for situations that cover either daytime or nighttime, where the calculation of exactly when the sun rises and sets is based on a geographical location (latitude and longitude), you can define twilight schedules.

What you should know

Twilight schedules are designed for situations where the sunlight has an impact on the system’s operation, such as with video settings and video recording.


  1. Open the System task, and click the Schedules view.
  2. Click Schedule (), type a name for the schedule, and then press ENTER.
  3. In the Identity tab, enter basic properties of the schedule, and then click Apply.
  4. Click the Properties tab.
  5. From the Date coverage drop-down list, select Daily, Specific, or Ordinal.
  6. If you selected Specific or Ordinal, set up the date coverage.
  7. From the Time coverage drop-down list, select Daytime or Nighttime.
  8. Select the Sunrise or Sunset options, and then select the amount of time to offset the sunrise time or sunset time (up to 2 hours before or after).


The following example shows a daily schedule using a Daytime coverage. The time coverage starts 10 minutes after the sun rises and ends 10 minutes before the sun sets.