"Sun, 18 Feb 2024 06:23:19"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240218
Only TIME
06:23:19
General datetime
2024-02-18 06:23:19Z
For Database
2024-02-18 06:23:19
For HTTP1.1
Sun, 18 Feb 2024 06:23:19 GMT