The Black Squirrel is devoting 13 of its 57 taps to India Pale Ales on National IPA Day, and offering other rare brews in bottles. (Photo by Bill O'Leary/The Washington Post)

Today is a day to celebrate hoppy, citrusy, delicious India Pale Ales. Yes, this “holiday” is as contrived as National Cupcake Day or National Bosses Day. And no, it’s not as if the IPA -- or its cousin Double IPA -- is an endangered species, as a visit to any taphouse will demonstrate. But if National IPA Day is an excuse for bars to pull out some rare or fancy beer for us to sample, I’m all for it. Here’s what a few local bars are doing to celebrate:

The Black Squirrel : The Adams Morgan bar will turn 13 of its 57 beer lines over to IPAs for the night, including Dogfish Head 120 Minute and Elysian Avatar Jasmine IPA. But the big attraction is the out-of-town bottles and cans that don’t usually hit bars in the D.C. area, including two from Durango, Colorado’s Ska Brewing (the esteemed Modus Hoperandi and the Decadance Imperial IPA), and Ballast Point’s Sculpin IPA and Big Eye IPA.

Also, it’s half-price burger night, and the Black Squirrel’s burgers are the best in Adams Morgan.

ChurchKey : While ChurchKey is waiting until Saturday to unleash 20 IPAs on draft, they will have a few specials tonight, including a cask of Flying Dog Doggie Style IPA with lemongrass and Moylan’s ridiculously hoppy Hopsicle Triple IPA on tap. (If there’s any of the Pizza Port Jetty IPA left -- a fine California beer that never makes it to D.C. but was on tap last night -- it’s highly recommended.)

Pizzeria Paradiso: As part of the ongoing Ale-Lympics, the Dupont Circle Paradiso is offering a flight of four IPAs for $10: To Øl/Mikkeller Ov-ral (Denmark), Troch Hopdraeck (Belgium), De Molen Lentehop (Netherlands) and Smuttynose Rye IPA (USA! USA! USA!).

Port City Brewing Company : Alexandria’s favorite brewery is offering specials on Monumental IPA in its new brewery tap room from 5 to 8 p.m.: Pints are $3 each, and 64-ounce growler fills cost $8. You can fill up with sweet and savory waffles from the Cole’s Palette food truck.

Punk’s Backyard Grill : The Annapolis bar and grill has filled a third of its dozen taps with IPAs, including Big Eddy Imperial IPA, Weyerbacher Last Chance, Anderson Valley Hop Ottin and Elysian Immortal.