Winter hours: Why your field shuts at four when it’s still light at half four

Article Snippet:

Two things about winter light that most people running a field have never been told: it stops getting worse a fortnight before the solstice, and there’s a usable forty minutes at each end of the day that sits outside sunrise and sunset altogether. 

Then in the full member article:

• Why sunrise and sunset are the wrong numbers to run your diary on, and what twilight is actually worth at each end of a British winter day
• A fortnight-by-fortnight timetable from October to March that leaves your core hours exactly where they are but makes you an extra £2k
• Where you are on the planet matters – use your geographical advantage