Green Bay shines bright during the ‘longest day’ of the year


With the official beginning of astronomical summer, Wednesday saw the most daylight out of any day of the year.

You often hear that the first day of summer is the longest day of the year. That is a false statement; every day of the year is 24 hours long.

But what we do get on the first day of summer is the most daylight out of any day of the year.

On Wednesday, Green Bay saw 15 hours, 33 minutes and 19 seconds of daylight — one second more than Tuesday’s amount of daylight.

But that means it’s all downhill from here — from now until Dec. 21, when winter starts, we will be losing daylight every day.

At first, this happens very slowly, and you really won’t notice much of a difference for a few weeks.

By the start of July, we will only have lost three minutes and 42 seconds of daylight total. And that’s split between sunrises and sunsets, so you really won’t notice it.

By the start of August, thought, you might notice that dusk creeping up just a little. There will be about 54 fewer minutes of daylight, which again is split between the beginning and end of the day.

But by Sept. 1, we’ll be approaching the fall equinox — the time of year we lose daylight the fastest. We’ll have lost more than two hours of daylight by then.

By the beginning of October, we’ll have lost nearly four hours of daylight, and by Nov. 1, we’ll have lost nearly 5.5 hours of daylight.

We do slow the pace down as the winter solstice approaches, though.

On Dec. 21, the day with the least daylight, we will have six hours, 43 minutes and 42 seconds less daylight than we saw on Wednesday. That’s more than a quarter of a day in darkness rather than seeing sunshine.

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