Hi!

My first ever 5K is on December 19th at 8 or 9 in the morning...

Sounds fine, right?

Right, except I work nights, and I not only have to work the night of the 18th, but there is a meeting I must attend at 5pm.
Normally I would sleep Dec. 18th from like 8am-4pm and be up from then until like 9am December 19th.
(complicated enough for you?)
But I have the 5k that morning and I'm a little worried about being all worn out from the really long day I will have had.

Suggestions please!
Should I take a nap after the meeting?
I work from 11pm-7am, I will literally be changing at work and driving to the thing from there.

I would just try to get in a good long sleep a day or two before the 18th, then just do what I had to do on the 18th/19th. I'm not a napper, myself, but if you're able to do it, it wouldn't hurt. As far as the run goes, if you're tired, just grab some caffeine on the way, get some breakfast about 2 hours before your run, and have a good time. You'll just be up maybe an hour or two past your normal bedtime, and the energy of the crowd and the running will carry you through.

Thank you so much! I really just needed someone to help me believe its going to be possible.