Within our change process our Change Manager would like a reminder email to be sent out to the Change Owner 1 hour prior to his outage window ending.
We have an attribute that is called "RequiredEnd" this is the end of the outage window for a change and as such the RFC should be marked as a success or failure so that actions can be taken if required.
He would like us to send the mail based on current time being 1 hour before RequiredEnd.
I haven't done very much on calculations and am quite stuck as to where to go with this. Is anyone able to help?