"Sat, 18 May 2024 22:21:35"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240518
Only TIME
22:21:35
General datetime
2024-05-18 22:21:35Z
For Database
2024-05-18 22:21:35
For HTTP1.1
Sat, 18 May 2024 22:21:35 GMT