"Sun, 19 May 2024 14:11:46"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240519
Only TIME
14:11:46
General datetime
2024-05-19 14:11:46Z
For Database
2024-05-19 14:11:46
For HTTP1.1
Sun, 19 May 2024 14:11:46 GMT