"Sun, 19 May 2024 18:42:51"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240519
Only TIME
18:42:51
General datetime
2024-05-19 18:42:51Z
For Database
2024-05-19 18:42:51
For HTTP1.1
Sun, 19 May 2024 18:42:51 GMT