Good morning, Hampton and North Hampton. Here are five things you need to know for Friday, March 23:

1. Today’s Featured Fun: Head on over to Winnacunnet High School tonight for a fun music event that goes to a great cause.

Seniors Emmalyn Sullivan and Allison Berman are hosting a "Light the Night" benefit rock concert for the leukemia charity Dear Jack Foundation as a part of their senior seminar project.

Doors open at 6 p.m., and the $7 concert will be held in the school's dining hall. Local bands STAY, Brookline Drive, Me vs. Gravity, and BoomBoom Crash headline the bill.

2. Who's the Top Dog? M the Dog Spa, a Depot Square pet grooming salon, is hosting a dog show Sunday from 12:30 to 3:30 p.m. Stop on down to see who will take the top categories, including "Most Original Costume," "Most Glamorous" and the "People's Choice Award."

You can still register your pet if you so desire, and registration is $25 (cash or check). In addition, over $1,000 in prizes will be awarded during the show, which does require reservations.

More information is available by calling 601-2146.

3. Free Kids Movie This Morning: Lane Memorial Library is playing "Caillou's Outdoor Adventures," a preschooler-appropriate movie, at 10 a.m.

4. This Day in History: On this day in 1839, the initials "O.K." were first published in The Boston Morning Post. Meant as an abbreviation for "oll correct," a popular slang misspelling of "all correct" at the time, OK steadily made its way into the everyday speech of Americans.

During the late 1830s, it was a favorite practice among younger, educated circles to misspell words intentionally, then abbreviate them and use them as slang when talking to one another.

Just as teenagers today have their own slang based on distortions of common words, such as "kewl" for "cool" or "DZ" for "these," the "in crowd" of the 1830s had a whole host of slang terms they abbreviated. Popular abbreviations included "KY" for "No use" ("know yuse"), "KG" for "No go" ("Know go"), and "OW" for all right ("oll wright").

Also, Patrick Henry voiced American opposition to British policy on this day in 1775, Mussolini founded the Fascist Party on this day in 1919, NHL legend Wayne Gretzky scored his record-breaking 802nd career goal on this day in 1994, and Hollywood icon Elizabeth Taylor died at 79 on this day in 2011.

5. Today's Forecast: Unfortunately, today will "only" be around 70 degrees. Pretty great for March. There is a 20-percent chance of showers before 9 a.m., although its more likely that today will be another beautiful, mostly sunny day with winds that could reach 17 mph.

There should be increasing clouds tonight, with a low around 40 degrees.