rwatson 06d9cc33dc If mktime() or timegm() return -1, print out the resume timer value as
"unknown", rather than a conversion of -1 to a date/timestamp.
2003-07-13 20:06:41 +00:00
..
2003-05-22 11:52:23 +00:00
2003-04-04 17:49:21 +00:00