"Sat, 23 Mar 2024 22:20:21"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240323
Only TIME
22:20:21
General datetime
2024-03-23 22:20:21Z
For Database
2024-03-23 22:20:21
For HTTP1.1
Sat, 23 Mar 2024 22:20:21 GMT