"Sun, 19 May 2024 19:57:31"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240519
Only TIME
19:57:31
General datetime
2024-05-19 19:57:31Z
For Database
2024-05-19 19:57:31
For HTTP1.1
Sun, 19 May 2024 19:57:31 GMT