hello im creating a grapg or a page snippet on where user can view on real time  the expected date time of a ticket minus the actual current sisteme date time so i can create a graph or a report that is green if expected date time has not expired related to current date time 

ej for has a ticket with expected delivery for tomorrow at 3 pm but since this date has not mate gaude or graph is still green if expired then its red 

any clous how can i do this