"Sat, 23 Mar 2024 18:40:56"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240323
Only TIME
18:40:56
General datetime
2024-03-23 18:40:56Z
For Database
2024-03-23 18:40:56
For HTTP1.1
Sat, 23 Mar 2024 18:40:56 GMT