Normal business hours M-F for drop off of donations. However, OCRM is open 24 hrs. You can also visit their website.
Actually you can drop off donations 7 days a week 8 am til 5 pm mon thru sunday. No furniture food clothes baby items etc.
I usually donate during working hours or midday on saturday. In the round about, there are usually 1-2 people manning a pop up shade with tables and chairs next to a roll up door. Only once did I drop by before sunset in the summer and they were not there, but the front door of the main office was open and I was able to drop off with the receptionist.
Thanks! Your answer is awaiting moderation.