@Cassie218 Standard check in time is 3:00 PM which @Emilia42 mentioned, depending on your check-in method, you can also put until when the guest can check in, if you have a self check in, you may select Flexible.
For check out time, 10:00 AM to 11:00 AM. I have a 10:00 AM check out time, and if guest would like to extend I give them 11:00 AM check out time to give them time to pack and leave in the morning, accommodating typical travel and activity schedules. Hope this helps!