Validity of exit re entry visa

Recently I did  single exit  re entry Visa. In the
visa duration column :it says ,'15 days from departure'.
Return before column:N/A
Since I have deferred  my plan for 2-3 weeks, can I travel that time? How long exit entry visa remains valid?
Can anyone share his experience?
Thanx

The exit re-entry visa has two dates.   

When it is issued for the first time, the first date that shows in Absher is the date you MUST exit the Kingdom by.   Then when you have exited, the date updates and now it shows the validity date of the exit re-entry visa i.e. the date by which you can come back before it expires.

If it is showing you 15 days, it is probably the first date.  If you don't exit then the visa expires and you have to apply for a new one.

Thanx for the response bro..