"Sun, 19 May 2024 16:11:03"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240519
Only TIME
16:11:03
General datetime
2024-05-19 16:11:03Z
For Database
2024-05-19 16:11:03
For HTTP1.1
Sun, 19 May 2024 16:11:03 GMT