"Wed, 15 May 2024 21:04:15"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240515
Only TIME
21:04:15
General datetime
2024-05-15 21:04:15Z
For Database
2024-05-15 21:04:15
For HTTP1.1
Wed, 15 May 2024 21:04:15 GMT