User blog comment:Googleaarex/Warp Notation/@comment-24509095-20140329182613/@comment-3427444-20170220014509

Except you didn't edit on 4/19/14, according to the history. And I'm assuming that you live in the US, and therefore an edit done on 2014-04-19 on where you live must have been done on either 2014-04-19 or 2014-04-20 UTC. The edit history however show neither of these things. I guess this is because you did these edits early?