'At Greenwich, England (51.5°N), the duration of civil twilight will vary from 33 minutes to 48 minutes, depending on the time of year. At the equator, conditions can go from day to night in as little as 20–25 minutes.' Wikipedia.

I am used to very quick twilight periods, where you set out on a walk and before you know it it’s already dark!

I’m still amazed by how light it is here late into the night, and how early the light reappears in the morning.