date -d '2006-02-14 00:00:00' +%s
1139846400
date -d '1970-01-01 UTC 1139846400 seconds' +'%Y-%m%d %T %z'
2006-0214 00:00:00 +0800
date -d '2006-02-14 00:00:00' +%s
1139846400
date -d '1970-01-01 UTC 1139846400 seconds' +'%Y-%m%d %T %z'
2006-0214 00:00:00 +0800