"Sun, 31 Mar 2024 11:20:03"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240331
Only TIME
11:20:03
General datetime
2024-03-31 11:20:03Z
For Database
2024-03-31 11:20:03
For HTTP1.1
Sun, 31 Mar 2024 11:20:03 GMT