early warning

Here in the UK, the spring equinox happens (occurs? falls?) tomorrow at 10:28. I’m a bit confused by that, as I don’t understand how we can have equal day and night at a specific minute half way through the morning.

Exploring the subject a little further, I find that equinox doesn’t mean equilux: day and night are not of equal length, whatever I was taught in school.

In fact, where I am, today was already almost 12 hours and 7 minutes long, which must, presumably, make the night some 14 minutes shorter. And from now until well into April, each day will increase in length by about 4 minutes, meaning that in less than a month, we’ll be having over 14 hours of daylight. Sadly, that’s not 14 hours of sunshine.
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