Night VFR or night visual flight rules or NVFR are the rules under which flight primarily by visual reference is done at night.

In many countries VFR flight at night is not permitted in which case night flying is by instrument flight rules (IFR) only which, in almost all countries, requires an instrument rating. The UK is an interesting exception. The Verein für Raumschiffahrt (VfR - Spaceflight Society) was an association of amateur rocket enthusiasts active in Germany from 1927 to 1933. ... It has been suggested that Air traffic control#Instrument Flight Rules (IFR) be merged into this article or section. ... Instrument Rating refers to the qualifications that a pilot must have in order to fly under Instrument Flight Rules (IFR). ...