UGT (abbr.): Universal Greeting Time.
UGT is convention initially established in #mipslinux on irc.openprojects.net (now irc.freenode.net) but slowly taking over the world. It states that it is always morning when person comes into a channel, and it is always late night when person leaves. Local time of any member of channel is irrelevant. Resistance is futile. Your ass will be laminated. (geoman is exception to this rule - his ass will be fried instead).
Used as follows:
Good (UGT) Morning, Everyone! or good morning (ugt) (on entry to channel).
Good (UGT) Night - when leaving it.