Phrase used as a celebration on a day change when informed by the IRC client IRSSI that the day as changed.
Day changed to 21 Nov 2009
00:00 < rapidDazz> HAPPY DAY CHANGE!
by rapidDazz November 20, 2009
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Oh happy day was being sung in church AGAIN this morning, must be the black folk church national anthem
by PissedOffPatriot35 February 14, 2016
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Referring to August 19, a day when everyone has to be happy, and no sad or depressing vibes are allowed.
Named after Hoshi, the happiest person to exist, who was born on that day.
"No no, you can't feel bad about yourself today, its Hoshi's Happy Day!".
by panda.fluffz April 28, 2020
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The expression you say when the clock strikes midnight to wish your friends a hopeful start of their brand new day.
*Clock Strikes Midnight*
You: HAPPY NEW DAY
Friend: HAPPY NEW DAY
by Americairo January 16, 2019
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Happy G day is another phrase for Happy birthday. But when you say happy g day to someone it means your close with them. It could also be referred to happy gangster day.
Hey happy g day Steve.
by BorderBandit November 30, 2020
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Happy treesh day is the definition of treesh it’s just a special day for the treesh people.

August 11 is treesh day
by RahhYT August 8, 2019
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When you are talking to someone and they don't happen to hear you or are spacing out, you say this phrase. It implies that they are like a tree and are impervious to their surroundings. Then, hopefully, they'll hear it and start paying attention.

I don't know if this phrase is used in English but I know it is used in Spanish. My Colombian friend used this when I didn't know she was talking to me. However, she said it in Spanish: "Feliz Dia del Arbol"
Person A: blahblahblah
Person B: *spacing out*
Person A: Happy tree day!
by Flora H January 8, 2006
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