Is Heathrow Airport closed at night?

Related questions

1. Is British Airways Terminal 5 only?
2. Is London Heathrow Airport privately owned?
3. Can you stay at Heathrow overnight?
4. Is Heathrow the world busiest airport?
5. Can you sleep in LHR?
6. Can you drink tap water in Heathrow?
7. Is Heathrow the biggest airport in the world?
8. Do children pay on Heathrow Express?
9. What terminal is my flight from Heathrow?
10. Is there WiFi in Heathrow Airport?

Tags

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2. #landings
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14. #heathrow
15. #restrictions
16. #night
17. #between
18. #airport
19. #during
20. #which
21. #amount