They're work schedule saids its not open on saturdays but their website saids that volunteers are able to volunteer from tuesday through Saturday sorting cans . can anybody tell me if i could volunteer on saturdays?

You can, absolutely! It's a highly desired day, so you will probably have to schedule farther out than you would on weekdays.

Ditto

Yes, we have volunteered several times on Saturdays. Very organized place to volunteer.

Nick has it right. Saturdays are catch up day using volunteers.

From what I've seen yes but be sure to speak to them in advance, the office personnel are off Saturdays and the warehouse uses that time to catch up.