Latitudes / latitude: Halfway Equator - North Pole, Circumferences of latitudes, Arctic Circle, Tropics of Cancer & Capricorn, Twilight. 

This website gives information about latitudes for a number of topics:

1. The halfway latitudes in distance between the Equator and the Poles.    

2. Circumferences of all the integer degrees of latitude. Lengths due north-south of all the degrees of latitude. Areas of all the degrees of latitude. Minimum distance Scotland to Northern Ireland (the last three topics are in subpages which appear in a drop-down menu below the above Circumferences of Latitudes page, when a cursor is placed on it).

3. Arctic and Antarctic Circles latitudes for the years 2000 to 2049, every 10 days.

4. Tropics of Cancer and Capricorn latitudes for the years 2014 to 2024, every 6 months. 

5. Southernmost and northernmost minimum latitudes of Civil, Nautical, Astronomical twilight through local solar midnight or twilight all night, for the years 2013 to 2020, i.e. at the northern / southern summer solstices.