How is “night” defined?
For the purpose of night flights, there are two “night” periods, as defined by the Government! Although “night” is officially from 11.00pm until 7am, there are only restrictions on the number of flights permitted during the “night quota” period, 11.30pm until 6am. How many flights are allowed at night?
On a typical night, no more than 16 flights are allowed between 11.30pm and 6am.
This document is made available as a PDF file.
Download http://hacan.org.uk/wp-content/uploads/2018/01/Night-Flights-Briefing-Sheet.pdf