"Sat, 23 Mar 2024 14:10:21"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240323
Only TIME
14:10:21
General datetime
2024-03-23 14:10:21Z
For Database
2024-03-23 14:10:21
For HTTP1.1
Sat, 23 Mar 2024 14:10:21 GMT