Fmotd with a Time Limit

[Government Official]

"take the force motd command and give it a time limit to how long it will be up, and if the user closes it before time is up reopen it. "

I was going around and asking for suggestions and someone gave me this.
I haven't Messed with time at all and im pretty sure this is possible but I need some help with it as a I am still learning
can someone teach me how to do this

[JamminR]

Please search the developers corner area for words such as "time button motd" or "time motd".
This has been discussed before.
Various ways - best solution would be to use a timer to not present a close button until the time expired, and I think that's what was discussed.