"Wed, 15 May 2024 18:21:57"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240515
Only TIME
18:21:57
General datetime
2024-05-15 18:21:57Z
For Database
2024-05-15 18:21:57
For HTTP1.1
Wed, 15 May 2024 18:21:57 GMT