"Sun, 25 Jan 1970 01:25:20"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700125
Only TIME
01:25:20
General datetime
1970-01-25 01:25:20Z
For Database
1970-01-25 01:25:20
For HTTP1.1
Sun, 25 Jan 1970 01:25:20 GMT