Day & Night DC

Washington runs on two clocks. By day it's a coffee city — roasters and neighborhood shops on every other corner. By night, some of its best bars hide behind unmarked doors. Day & Night DC is a hyperlocal guide to both: flip between Day and Night, and the map shows you where to go right now.

The map is half the pleasure: a dark, metro-style view of the city drawn around Washington's actual Metro lines. Tap any station and you get live train arrivals straight from WMATA — so you know exactly how long you have for one more round.

Underneath runs a data pipeline I built: an AI extraction system reads local-business websites and pulls structured information — hours, locations, contact details — and I verify every field by hand against its source before it ships. Human-in-the-loop, so the data can be trusted.

The map is deliberately short — because behind it sits an admin app I built to train the discovery model. It surfaces speakeasy and coffee-shop candidates from open venue data (2,304 and counting), and I judge every single one: keep, review later, or reject — tagging the keepers with what makes them belong: true-speakeasy, perfect-vibe, hidden.

The running score: 7 keeps, 192 rejects. Only the absolute best make the list.

Currently building: the compass — point your phone and it points you to the nearest coffee shop or speakeasy, depending on the hour.