I just discovered something interesting. If I hit reply to a toot, it's the time at which I do that that counts as the time I made the toot, and not when the toot actually sends (when I hit the TOOT button).
@WelshPixie Very interesting, I am.going to try :)
@erdal Did it do it for you? I noticed because I opened a reply to someone, left the box open a while, meanwhile someone else replied, and after their response I wrote mine and entered it, but mine showed up before theirs.