Normally for 221g form, in how many days H1B Visa gets approved for white slip in Delhi Embassy?

If you have any pattern, could you please answer my question for H1B Visa for white slip in Delhi embassy.

I got white on 27th Dec 2016 and submitted documents on 30th dec 2016. When can I expect my Visa Approval?

Could you share your experience, like how long it took for you to resolve the 221g case