"Mon, 19 Aug 2024 15:40:09"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240819
Only TIME
15:40:09
General datetime
2024-08-19 15:40:09Z
For Database
2024-08-19 15:40:09
For HTTP1.1
Mon, 19 Aug 2024 15:40:09 GMT