Complex sentence: The temple is open from 7:15 am to 8:00 pm.And the last arati is at 9 pm called the sayana arati which lasts about 15 minutes.
Split into simpler sentences: The temple is open from 7:15 am to 8:00 pm. However, the last "aarati" (worship), called the "sayana arati", is at 9:00 pm, which lasts about 15 minutes.