When to see Northern Lights
In Ammassalik, northern lights are more frequent in late autumn to early spring. October – beginning of April are the best months to see northern lights. NL are most frequent and intense from 10 p.m. to midnight, magnetic time. Brilliant auroras often occur at 27-day intervals as active areas on the sun's surface face earth during its 27-day rotation cycle. Northern lights activity corresponds closely to sunspot activity, which follows an 11-year cycle, but there seems to be a one-year delay between sunspot maximum and maximum auroral occurrence. Northern lights activity is 20-30% less during solar minimum than at solar maximum.