"Sun, 19 May 2024 22:21:36"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240519
Only TIME
22:21:36
General datetime
2024-05-19 22:21:36Z
For Database
2024-05-19 22:21:36
For HTTP1.1
Sun, 19 May 2024 22:21:36 GMT