"Wed, 15 May 2024 21:03:59"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240515
Only TIME
21:03:59
General datetime
2024-05-15 21:03:59Z
For Database
2024-05-15 21:03:59
For HTTP1.1
Wed, 15 May 2024 21:03:59 GMT