@wildride and
@design_mom already mentioned this, but it bears repeating... Galentine's Day is a pop culture invention that comes from the 2009-2015 NBC sitcom
Parks and Recreation.* It's kind of like Festivus from
Seinfeld,** a made-up holiday that seeped into the mainstream to such an extent that some people celebrate it and don't even realize that it originated on a TV show. Galentine's Day actually shows up in three different episodes, which aired in 2010, 2012, and 2014. The first and the third ones were both titled "Galentine's Day."
The name and the traditions associated with it come directly from there; Amy Poehler's character, Leslie Knope, is a gift fiend who values her female friendships and likes dorky puns like "ovaries before brovaries." She creates holidays for everything and prides herself on being the world's greatest gift giver. But real-life Galentine celebrators don't need to do the same thing. Not everyone wants to create mosaics out of the crushed bottles of their friends' favorite diet sodas. Or embroider pillows with headlines from their friends' dates of birth. That's Leslie Knope, so if all you want to do is go out for mimosas, then cheers!
It seems like there are a few people saying "Why isn't it ______ instead?," and the basic reason is... that's not how series creator Michael Schur wrote it (yeah, a dude invented Galentine's Day... but he's a pretty cool dude). It's totally unsurprising that folks want something a little different, since Valentine's Day probably already has more alternate versions invented on or around it than any other real holiday. And hey, there's plenty of room for more!
So it can be observed however folks want to observe it (or ignore it), but I thought it would be handy to stress that it didn't just emerge amorphously out of some vague concept. The
original concept comes from a specific time, place, and individual (Michael Schur in real life, via Leslie on TV). The first people to celebrate it were probably
Parks and Rec fans who were honoring the show as much as they were honoring female friendships. Course, it's grown way beyond that now, but there's some value in knowing its roots, right?
* Can I swear that no one in the world ever used the name Galentine's Day before Parks and Rec? Nope (or should I say "Knope"?). But there's no real question that there was no widely agreed-on concept for it before the show. It's very fair to say that we wouldn't have threads like this, where various people talk about having experienced Galentine's Day celebrations first- or second-hand, if it hadn't been for the show.
** Festivus is actually less of a pop culture invention because a Seinfeld writer celebrated it in his family before writing it into the script, as opposed to being invented for a show from scratch.