Antietam National Battlefield is a National Battlefield in Maryland. This guide combines the park's official information with computed sunrise, sunset and Milky Way times, satellite climate data and nearby photo locations.
Sunrise, sunset & golden hour
At Antietam the sunrise point swings a long way through the year: about 58° (ENE) at the June solstice and 120° (ESE) in late December. Sunset moves from 302° (WNW) in June to 240° (WSW) in December, and the midday sun climbs to 74° in summer but only 27° in winter.
| Month (15th) | Sunrise | Golden hour ends | Golden hour starts | Sunset | Sunset az. | Daylight |
|---|---|---|---|---|---|---|
| January | 7:30 AM | 8:11 AM | 4:31 PM | 5:12 PM | 243° | 9h 41m |
| February | 7:04 AM | 7:42 AM | 5:10 PM | 5:48 PM | 254° | 10h 44m |
| March | 7:23 AM | 7:59 AM | 6:43 PM | 7:18 PM | 268° | 11h 55m |
| April | 6:34 AM | 7:11 AM | 7:13 PM | 7:49 PM | 284° | 13h 14m |
| May | 5:58 AM | 6:36 AM | 7:40 PM | 8:18 PM | 296° | 14h 20m |
| June | 5:44 AM | 6:24 AM | 8:00 PM | 8:40 PM | 302° | 14h 56m |
| July | 5:57 AM | 6:36 AM | 7:59 PM | 8:38 PM | 299° | 14h 41m |
| August | 6:24 AM | 7:01 AM | 7:32 PM | 8:08 PM | 289° | 13h 44m |
| September | 6:53 AM | 7:28 AM | 6:46 PM | 7:21 PM | 275° | 12h 28m |
| October | 7:21 AM | 7:58 AM | 5:57 PM | 6:33 PM | 260° | 11h 12m |
| November | 6:56 AM | 7:35 AM | 4:18 PM | 4:57 PM | 247° | 10h 02m |
| December | 7:25 AM | 8:07 AM | 4:07 PM | 4:49 PM | 240° | 9h 24m |
Computed for the park's reference point (39.4676, -77.7383); large parks span several minutes of difference.
Milky Way & dark skies
From Antietam, the Milky Way core is visible in a dark sky from March through September. June gives the longest window (about 5.0 hours on a moonless night), and the core peaks around 22° above the southern horizon. Our light-pollution model puts the sky at about Bortle 4 (rural / suburban transition), good enough for detailed Milky Way images.
| Month | Core visible (15th) | Hours | Max altitude |
|---|---|---|---|
| January | Not visible in darkness | — | — |
| February | 5:18 AM – 5:28 AM | 0.2 | 12° |
| March | 4:28 AM – 5:48 AM | 1.3 | 18° |
| April | 2:25 AM – 4:55 AM | 2.5 | 21° |
| May | 12:28 AM – 3:58 AM | 3.5 | 22° |
| June | 10:42 PM – 3:42 AM | 5.0 | 22° |
| July | 10:34 PM – 2:14 AM | 3.7 | 22° |
| August | 9:49 PM – 12:09 AM | 2.3 | 21° |
| September | 8:53 PM – 10:13 PM | 1.3 | 18° |
| October | 8:03 PM – 8:13 PM | 0.2 | 12° |
| November | Not visible in darkness | — | — |
| December | Not visible in darkness | — | — |
4 Estimated Bortle 4 — Rural / suburban transition. Light domes are visible in several directions; the Milky Way is clear but lacks detail near the horizon.
Weather & best time to visit
The weather is fairly mild. Summers can be very warm and humid and winters cold and snowy. We have four distinct seasons with the fall and spring being the best times to visit the battlefield.
Weather overview: National Park Service.
Long-term NASA satellite data for this area show September as the clearest month (about 52% average cloud cover) and December as the cloudiest (66%). July is the warmest month and January the coldest, which matters for gear, snow access and how long batteries last at night.
Average cloud cover (%)
Average high (°F)
Photography permits, drones & fees
Permits. Under federal law (54 U.S.C. 100905), still photography in National Park Service areas needs a permit only when it (1) takes place where members of the public are not allowed, (2) uses models, sets or props that are not part of the location's natural or cultural resources or administrative facilities, or (3) would cause the park to incur additional administrative costs to monitor the activity. Ordinary visitor and most landscape photography needs no permit. Commercial filming rules are separate and have changed in recent years — confirm current requirements with the park before a paid shoot.
Drones. Launching, landing or operating unmanned aircraft (drones) is prohibited in National Park Service units under a 2014 Superintendent's closure (36 CFR 1.5), except where a park has issued specific written approval. Flying from outside the boundary over park land can also violate park rules and disturb wildlife.
| Entrance fee | Cost (USD) |
|---|---|
| Entrance - Private Vehicle | $20.00 |
| Entrance - Per Person | $10.00 |
| Entrance - Motorcycle | $15.00 |
| Commercial Entrance - Motor Coach | $100.00 |
Fees as published by the NPS when this page was built — confirm on nps.gov before you go.
Getting there
Ten miles south of I-70 on Maryland Route 65
Directions: National Park Service.
Activities
- Biking
- Road Biking
- Camping
- Group Camping
- Guided Tours
- Self-Guided Tours - Walking
- Self-Guided Tours - Auto
- Hiking
- Living History
- Historic Weapons Demonstration
- Junior Ranger Program
- Wildlife Watching
- Birdwatching
- Park Film
- Museum Exhibits
- Shopping
- Bookstore and Park Store
Nearby parks
WV/VA
MD
MD
DC/MD
PA
PA