Mutual conversion date and timestamp @ FreeBSD

>date +%s
1404955131

>date -r 1282367908
Sat Aug 21 13:18:28 CST 2010

>date -j -f “%Y-%m-%d %H:%M:%S” “2014-06-30 23:59:59” “+%s”
1404143999

>date
Thu Jul 10 09:21:32 CST 2014

—
Done

Ref: https://blog.wnlin.org