Newspapers have a bad history of "experimenting" with enabling online comments and then deciding the experiment failed and delete them all. You're a newspaper, you're not supposed to delete history when you don't like it!!!
And then they complain when people use social media as their newspaper.
Except that internet commenters are very weird, and like the least representative sample ever. Not quite as weird as Wikipedia editors, but still really weird.
Unixtime is the number of seconds since 1/1/1970. Subtract a few hours for timezone post processing and you get 12/31/1969 as a date. Indicated time zero or null or missing value trying to get formatted as a date.
This is Dec 31 1969 at 7:00 PM in Eastern Standard Time.