Convert ttimestamp with zone to local time - BASH : I am trying to do basic time math in bash, having following timestamps from OpenDj:
createtimestamp: 20161123165725Z

I don't know what time zone the system will be set with, it can be with "Zulu" timezone (UTC) as above or might be with some other timezone. The above timestamps is for the users in LDAP servers , what I need to do is to compare the timestamp of the user with certain time stamp. 

Question:
How do I convert the timestamp with zone (Z) above to local timestamp or epoch time in BASH? 

Thanks,

Jorge