"Sun, 18 Aug 2024 15:20:07"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240818
Only TIME
15:20:07
General datetime
2024-08-18 15:20:07Z
For Database
2024-08-18 15:20:07
For HTTP1.1
Sun, 18 Aug 2024 15:20:07 GMT