Gaithersburg Community Museum and Latitude Observatory

Skywatching: International Observe the Moon Night

Saturday, September 19, 2026

Event

We will join people from all around the world exploring and appreciating Earth’s moon. Enjoy hands-on activities.

Skywatching programs are held in Observatory Park, home to the historic International Latitude Observatory. Programs are free, but registration is required. Observatory Park is at 100 DeSellum Avenue. Parking is in the St. Martin’s field at Route 355 and DeSellum, two blocks from Observatory Park.

Date: Saturday, September 19, 2026

Time: 6:30 p.m. - 8:30 p.m. Eastern

Location: Observatory Park
100 DeSellum Avenue
Gaithersburg, MD 20877

Information for Visitors

Location Details

Observatory Park
International Latitude Observatory is located in Observatory Park
100 DeSellum Avenue
Gaithersburg, MD 20877
(click to get directions)
check weather forecast
Gaithersburg International Latitude Observatory

Notes:
This site is managed by the Gaithersburg Community Museum. The park is open daily with informational signage. The Observatory building is open during events.

UPCOMING EVENTS

Sat 7/18/2026
2 p.m. - 4 p.m. Eastern 		Skywatching: Solar Science Observatory Park
100 DeSellum Avenue Gaithersburg, MD
Wed 8/12/2026
1 p.m. - 2:30 p.m. Eastern 		Skywatching: Partial Solar Eclipse Gaithersburg Community Museum
9 S. Summit Avenue Gaithersburg, MD
Fri 8/14/2026
- Sat 8/15/2026
9:30 p.m. - 1 a.m. Eastern 		Skywatching: Movie and Meteors
Sat 9/19/2026
6:30 p.m. - 8:30 p.m. Eastern 		Skywatching: International Observe the Moon Night Observatory Park
100 DeSellum Avenue Gaithersburg, MD