Displays here switch on around sunset. In Upper Marlboro that means about 4:46 PM in early December and 4:46 PM by mid-month — the earliest sunsets of the year fall right in the middle of lights season. It is properly dark by about 5:16 PM, which is when the displays look their best. December nights in Upper Marlboro typically drop to around 30°F.
Date
Sunset
Fully dark
Dec 1
4:46 PM
5:15 PM
Dec 15
4:46 PM
5:16 PM
Dec 25
4:51 PM
5:21 PM
Practicalities
Residential displays have no facilities of their own — no parking, no toilets, nowhere to warm up — so it is worth knowing what is around. Within about three miles of the Upper Marlboro cluster, OpenStreetMap maps 0 public car parks and 10 public toilets. Only 16 cafés or takeaways nearby, so bring a flask if you want one.
A drive-through light show at Watkins Regional Park in Prince George's County, open nightly from late November through New Year's Day. Vehicles pay $15 online or $20 at the gate.