"Sun, 31 Mar 2024 14:10:21"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240331
Only TIME
14:10:21
General datetime
2024-03-31 14:10:21Z
For Database
2024-03-31 14:10:21
For HTTP1.1
Sun, 31 Mar 2024 14:10:21 GMT