"Sun, 19 May 2024 14:37:23"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240519
Only TIME
14:37:23
General datetime
2024-05-19 14:37:23Z
For Database
2024-05-19 14:37:23
For HTTP1.1
Sun, 19 May 2024 14:37:23 GMT