"Sun, 19 May 2024 20:14:55"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240519
Only TIME
20:14:55
General datetime
2024-05-19 20:14:55Z
For Database
2024-05-19 20:14:55
For HTTP1.1
Sun, 19 May 2024 20:14:55 GMT