When did you put your baby in the crib at night?

My baby is 3 months old. Since she was just a couple of weeks old she has slept perfectly through the night. Bed time is between 8-9pm and usually wakes up around 6:30am. Just curious when you put your little ones in the crib at night? I have a monitor that will be next to my bed so I can see and hear her all night. She is currently sleeping in her crib for nap time and does wonderful.