Defining twilight schedules - 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. - Security Center 5.11

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.

1. Open the System task and click the Schedules view.
2. Click Schedule (), type a name for the schedule, and 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 list, select Daily, Specific, or Ordinal.
6. If you selected Specific or Ordinal, set up the date coverage.
7. From the Time coverage 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).