EVA Air’s official site notes that check-in for flights at JFK’s Terminal 1 occurs at counters B8–B15, which open 4 hours before departure and close 60 minutes before departure. The Lufthansa Lounge and Baggage Service Office operate according to flight schedules, typically from the evening into early morning https://www.gateandterminal.com/eva-air/eva-air-terminal-jfk-airport/