'End of day' — the deadline that means 'today', without saying which hour, and the record's entry for the acronym that has caused more late nights than any other. 'EOD' at 5:15 p.m. is a specific cruelty. 'COB' is the same for the older.
Small fix: the peak year is right but the peak was shorter than a year — closer to six weeks. The rest of 2018 was people explaining it.
The record notes 'EOD' has never once been defined, that it means 5 p.m. to the sender and midnight to the recipient, and that this gap is where work happens.
What does it mean? Write it the way you would say it out loud.
