Running task once a day in vibe.d

[Zardoz via Digitalmars-d-learn]

On Tuesday, 16 February 2016 at 18:30:43 UTC, Nick wrote:
> Hey folks
>
> I'm making a vibe.d application. Once a day it needs to 
> download some data. How do i get the program to perform this 
> task once a day?
>
> Regards, Nick

Why you not use cron to launch your program at desire time every 
day ?