"Sun, 12 May 2024 21:04:20"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240512
Only TIME
21:04:20
General datetime
2024-05-12 21:04:20Z
For Database
2024-05-12 21:04:20
For HTTP1.1
Sun, 12 May 2024 21:04:20 GMT