If an H-1B, H-2A, or H-2B petitioner submits evidence establishing that the primary reason for failing to timely file an extension of stay or change of status request was due to the government shutdown, USCIS will consider the government shutdown as an extraordinary circumstance and excuse the late filing, if the petitioner meets all other applicable requirements.
I will begin with a sincere thanks for all the information I have got from these forums over the last few months and the amount of confidence I have gained through it.
Now, its my turn give back something by sharing my experience and hope this helps in giving some information to the others like me.
My visa was scheduled for 08:15 AM I reached the car parking in the nearby Malcha Marg parking by 7:45 AM. It is few minutes walk from there. I reached embassy by 7:55 or so. I was with my wife who would get an H4.