Under Automation , Sunrise/Sunset select a City Near You, select the correct Time Zone, click Calculate and Send to Control and try the following Rules:
{Adjust to your Customers needs}
Whenever The Time is 15 Minutes Before Sunset
AND the Day of the Week Is/Are _ _ _ _ _ F _
{Optional} Then Bypass All Non-Secure Burglar Zones in My Home (Area 1)
Then Arm My Home (Area 1) to xxxx Mode
Whenever Sunrise
AND the Day of the Week Is/Are _ _ _ _ _ _ S
Then Disarm My Home (Area 1)