Presidents Day is Monday, Feb. 20. The U.S. Post office, local schools and many banks are closed in observance of the holiday. Moo Moo Sweet House, which sells boba tea, shaved ice, smoothies as well as other hot and cold beverages, held its grand opening on Monday at 7306 Louetta Road, Ste. A 120, Spring. 346-808-7182. www.moomoosweethouse.com A stargazing event is held at Pundt Park on Wednesday from 6-9 p.m. at 4129 Spring Creek Drive, Spring. The event is led by members of the North Houston Astronomy Club. All ages are welcome to attend this free event. 281-353-4196. www.hcp4.net The Martini and Gems Gala for the Spring Klein Chamber of Commerce will be held on Feb. 24. The event will feature signature martinis, a photo booth and a live DJ. The event honors department chairwoman Timika Simmons and welcomes incoming chairman Anthony Shorrosh. 7:30-11:30 p.m. $55. Woodson's Reserve Club, 3923 Rolling Thicket Drive, Spring. 281-257-9559. www.springkleinchamber.org