Instead of putting the time you should put how many hours that is since you posted that way it works no matter where you are
for instance right now it is 6pm in the UK
if I was to post at 10pm I would post

"I will be posting at 10pm uk time (4 hours )"
just something that makes it easier for others to know how long until you will post.

[quote=ShadowGhoul]
Hi, I just wanted to say I plan to post either very soon, as in, within the next hour, but if not, I will not get the chance again until approx 5 pm EST. Today has been a really hecktic day but I will try my hardest to get it before I leave again.
[/quote]

That should be fine