Regarding appearing for H1b interview for application of 2016 Apr.

Hi Friends,

Could you please help on below query.

I got to know from my employer stating that H1B was picked in 2016 April. But till now I didnt received Recipt number.

PLease confirm whether still the receipt number will be valid.

If so, till what time I will have time to appear for H1B interview.

Also, pls let me know whether extension also happens along with approval of petition.

Please advise!

Thanks and Regards,