"Sun, 19 May 2024 12:13:36"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240519
Only TIME
12:13:36
General datetime
2024-05-19 12:13:36Z
For Database
2024-05-19 12:13:36
For HTTP1.1
Sun, 19 May 2024 12:13:36 GMT