I was wondering why last message posted times are not in the 24hr clock format.
Or is it a user option I can change?

It's a board level setting, not user selectable at least in this version of the board software.

I could change it but it would affect everyone and in the 10 years we've been going this is the first request so I'm thinking most people are OK with it the way it is.

I would prefer the 24 hour format also, now that most or at least many of the most active members here call from the USA I guess we have to go with the majority. But I'd be glad if we get the option some day to have a personal preference setting for date, time and units.

To be honest it wasn't a request, merely an observation brought about by quickly scanning the last post column,and not noticing the AM PM suffix and so revisiting previously read posts.
As TheAnt says it would be a helpful addition to have it as a user option though.
I live in the UK so it's local time for me, I'm sure others in different time zones would like to see everything in their own local time(assuming this isn't already available), but you cant' have everything.

I'm good with the AM-PM format. And yes, when you are logged in with your username, it does show the times in your local selected timezone. If you don't log in, I believe it just shows post times in UTC.

It has been in this format for as long as I can recall. Again, I'd just as soon have it stay the way it is. I use the board's function of showing me which threads have new posts since I last looked to avoid pulling up old posts I have already read.

-the other Doug

It's already available -look under 'My Controls' - with automated DST etc.

you also have the issue of Microsoft windows "time"
VS.
Apple/IBM Unix/Linux/Solaris/BSD time

this leads to some "fun"
in that replies to your post "MIGHT" be posted BEFORE the original post

using UT would be nice IF Microsoft would set the clock on the MOBO to UT , like everyone else in the world