"Wed, 15 May 2024 18:43:23"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240515
Only TIME
18:43:23
General datetime
2024-05-15 18:43:23Z
For Database
2024-05-15 18:43:23
For HTTP1.1
Wed, 15 May 2024 18:43:23 GMT