Skip to content

Milky Way Season in Maryland

The galactic core is up in full darkness from about February 17 to October 13 at Assateague Island National Seashore. Every window on this page is computed from sun and core geometry, checked against US Naval Observatory tables.

Core season is open · typical window this month 7:55 PM to 8:10 PM
Core max altitude
22.8°
Season
Feb 17 to Oct 13
Best month
June

The Maryland core season at a glance

Computed · USNO checked
Today
Nights with at least 30 minutes of galactic core at 10 degrees or higher during astronomical darkness, computed for Assateague Island National Seashore.
22.8°
core max altitude
at latitude 38.2 N
239
nights with a window
2027, of 365
Jun · Jul · Aug
evening core months
core up before midnight
none
no full darkness
sun never 18° down

Assateague's barrier-island beach is Maryland's best southern horizon, with wild ponies for foreground. Western Maryland's mountains are the inland alternative.

Month by month

When can you see the Milky Way in Maryland?

The table gives the computed core window for the night of the 15th of each month at Assateague Island National Seashore (38.20, -75.15): when the galactic core is at least 10 degrees up while the sun is at least 18 degrees down. Early in the season the window is strictly pre dawn; by high summer it fills most of the night (where the night stays properly dark); in the season's last weeks it is a brief evening show. Add the moon: the windows below are only dark if the moon is too.

JanFebMarAprMayJunJulAugSepOctNovDec
MonthCore window (night of the 15th)Core time per nightVerdict
Januarycore too lownoneNo window
February5:00 AM to 5:20 AM46mPre dawn
March4:10 AM to 5:40 AM1h 39mPre dawn
April2:05 AM to 4:45 AM2h 47mPre dawn
May12:10 AM to 4:00 AM4h 01mPre dawn
June10:25 PM to 3:40 AM5h 11mPeak
July10:15 PM to 2:15 AM4h 00mEvening
August9:35 PM to 12:10 AM2h 40mEvening
September8:40 PM to 10:10 PM1h 33mEvening
October7:55 PM to 8:10 PM43mEvening
Novembercore too lownoneNo window
Decembercore too lownoneNo window

Computed by our tested astronomy model (sun position per the NOAA solar equations, sidereal time per Meeus), verified against US Naval Observatory twilight tables to within a few minutes. Not a weather forecast: clouds are yours to dodge.

Moonless windows

Which nights are dark enough? The next three moon windows

A bright moon hides the core even from a Bortle 1 sky, so the practical planning unit is the dark window around each new moon. Nights where the moon is no more than 25 percent illuminated, computed from the moon's phase for the months ahead:

October 2026

Oct 5 to 14. Core window: 7:55 PM to 8:10 PM

November 2026

Nov 3 to 13. No core window this month here.

December 2026

Dec 3 to 13. No core window this month here.

Dark windows are derived from the Meeus lunar phase series, checked against USNO new moon times. Moonrise and moonset are not part of the calculation, so treat shoulder nights as approximate. Full year calendar: Milky Way season 2027 month by month.

Advertisement
Where to go

The darkest places to watch from in Maryland

The core sits in the SOUTHERN sky, so unlike aurora chasing you want an open southern horizon with no town behind it. These are the same curated dark sites our northern lights pages use, certifications checked against DarkSky International's directory:

Assateague Island National Seashore

est. Bortle 338.20, -75.15

Thirty-seven miles of undeveloped barrier island, with the Atlantic on one side and Chincoteague Bay on the other and almost no lighting on either.

Savage River State Forest, Garrett County

est. Bortle 339.55, -79.10

Maryland's darkest inland sky, high in the Alleghenies.

Green Ridge State Forest

est. Bortle 339.63, -78.43

Ridge-and-valley dark zone west of Hancock with north-facing overlooks.

Blackwater National Wildlife Refuge

est. Bortle 438.42, -76.12

Eastern Shore marsh with a flat horizon and little light pollution.

The Milky Way over the Fort Jefferson harbor light, Dry Tortugas National Park, Florida
The Milky Way over the Fort Jefferson harbor light, Dry Tortugas National Park, Florida. “DRTO Harbor Light Milky Way NPS Photo by M.Collier 11Aug21 2 (10)” — drytortugasnps — Public domain
Field guide

How to photograph the Milky Way core from Maryland

Pick the night
New moon window first, weather second. Use the moon windows above, then watch the cloud forecast. In Maryland the sweet spot is a moonless June night.
Pick the spot
Bortle 1 to 3, open to the SOUTH. The core tops out at 22.8 degrees here, about a fist and a half above the horizon at arm's length, so even low ridges or light domes to the south will eat it.
Camera
Wide and fast: 14 to 24 mm at f/2.8 or faster, ISO 3200 to 6400, 10 to 20 seconds (shorter with longer focal lengths to keep stars round), manual focus on a bright star. Shoot raw. A phone with a night mode on a tripod captures the core too under a Bortle 1 to 3 sky.
Timing inside the night
Use the computed window. Mid month here: 10:25 PM to 3:40 AM. The core is highest in the middle of that window.
The Milky Way core framed by Delicate Arch, Arches National Park, Utah
The core at its best: a moonless summer night, a dark site, and an open southern view. “Arches National Park Delicate Arch at night” — National Park Service — Public domain
The geometry

Why Maryland's core season runs the way it does

The galactic core sits at declination minus 29 degrees, in Sagittarius. From Maryland's latitude of about 38.2 north, it can never stand higher than roughly 22.8 degrees above the southern horizon. Whether you actually see it then comes down to when that low arc coincides with real darkness: the sun 18 degrees below the horizon, the astronomers' definition of a fully dark sky.

In late winter that overlap happens just before dawn, which is why the season opens with 4 am starts around February 17. Through spring the core rises four minutes earlier each night, until by June it is up in the evening and the whole short night is core time. By October the core sets soon after dusk and the season closes. The National Park Service's night sky program puts it the same way: some part of the Milky Way is visible year round, but "June through August will provide the best views" of the galactic center.

The Milky Way arching over Devils Tower, Wyoming, with the core at lower right
The whole band arcs overhead while the bright core stays low in the south: latitude decides how low. “Milky Way arching over Devils Tower” — NPS Natural Resources — Public domain

And darkness itself is the scarce ingredient. The world atlas of artificial night sky brightness (Falchi et al., Science Advances, 2016) concluded that "the Milky Way is hidden from more than one third of humanity, including 60% of Europeans and nearly 80% of North Americans." The dark site list above is the antidote.

The Milky Way in a dark sky over the Chisos Mountains, Big Bend National Park
What a Bortle 1 sky looks like: Big Bend National Park, the least light polluted national park in the lower 48. “Night Sky Over Chisos Mountains (de3b5b2d-7015-4ca5-871b-4da5a8858774)” — NPS Photo — Public domain
Common questions

Maryland Milky Way FAQ

Keep planning

More Maryland nights

More Southeast Milky Way seasons

Advertisement

All season dates, windows and altitudes on this page are computed by our tested astronomy model for Assateague Island National Seashore and the 2027 season (they shift by at most a day or two between years); verification against US Naval Observatory tables lives in the model's test suite. Bortle classes are estimates; DarkSky certifications are checked against darksky.org. Hero image: “DRTO Harbor Light Milky Way NPS Photo by M.Collier 11Aug21 2 (10)” — drytortugasnps — Public domain. National picture: Milky Way season in all 50 states · the 2027 dark sky calendar