What are the usual opening and closing times of antique markets in Beijing?

Generally speaking, it will open from early morning to late afternoon.
For example, the operation time of Panjiayuan is from 08:00 to 18:00 from Mon. to Fri. and 04:30 to 18:00 during weekends.

I see. And what about BJ Curio City? On Wikipedia it says market usually close at 18:30. I have a very tight schedule and I was trying to get an info that would be as accurate as possible. Also which antiques markets would you recommend? I am looking to buy just few things, more like small objects e.g. tiny cupboards and porcelain, and other things like that. I really appreciate your help. Thanks.

Hi, Peking Antique City is open from 09:30 to 18:30 every day. I strongly suggest you go there to get the items you mentioned, because it is regarded as the largest antique market in this city with all kinds of things of good quality.