Convert String to Date and Add ±N Hours

[Steven Schveighoffer]

On Saturday, 4 November 2023 at 18:11:53 UTC, Vahid wrote:
> Hi,
>
> I have a date string with the format of "2023-11-04 23:10:20". 
> I want to convert this string to Date object and also, add ±N 
> hours to it. For example:
>
> `"2023-11-04 23:10:20" + "+2:00" = "2023-11-05 01:10:20"`
> `"2023-11-04 23:10:20" + "-2:30" = "2023-11-05 20:40:20"`
>
> How can I do this?

Parse the date. There is a nice package on code.dlang.org that is 
for date parsing: https://code.dlang.org/packages/dateparser

-Steve