Here is the new RFP with a deadline of 2 p.m. local time. The previous RFP brought in only one proposal and it was turned in one minute after the deadline. The purchasing office uses an "atomic-clock setting," which is about 7 minutes earlier than time one sees on CNN or Weather Channel or on your alarm clock or wrist watch. My computer provides "atomic-clock" time, which is supposedly more accurate for a given point on earth.
Ask Art Hobson to explain the process of determining atomic time. Only a physics professor is likely to explain it easily. And Art is a physicist who has been explaining his science to undergraduates for decades.