The Telegram (St. John's)

Afraid of the dark? Not much to fear these days

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What’s not to love about June? The sun is up before 5:30 a.m. and it doesn’t set until after 9 p.m.

Sunrise and sunset times are one thing, but when it comes to darkness and light, we should take into account the many shades of twilight:

There is astronomic­al twilight, known as partial darkness, after sunset or before sunrise, when the centre of the sun is between 12 and 18 degrees below the horizon.

Nautical twilight: that period in the morning and evening when the sun is between 6 and 12 degrees below the horizon.

Civil twilight: when the geometric centre of the sun’s disk is no more than 6 degrees below the horizon.

With all these twilights, how much true darkness is there these days? Well, for example, let’s use June 22 data for Charlottet­own, P.E.I.

Sunrise: 5:27 a.m. – Sunset: 9:08 p.m.

Astronomic­al Twilight – 2:34 a.m.-3:48 a.m.

Nautical Twilight – 3:48 a.m.-4:41 a.m.

Civil Twilight – 4:41 a.m.-5:20 a.m.

Daylight – 9:07 p.m.-9:46 p.m.

Nautical Twilight – 9:46 p.m.- 10:39 p.m.

Astronomic­al Twilight – 10:39 p.m.-11:53 p.m.

Night – 11:53 p.m.-2:34 a.m.

You’ll find total darkness in

Charlottet­own between 11:53 p.m. and 2:34 a.m., a grand total of 2 hours and 41 minutes. Labrador City is plunged into total darkness for only 1 hour and 28 minutes. In Halifax, there is no light in the sky at all for 3 hours 25 minutes.

Photograph­ers like Barry Burgess take advantage of the soft light in the night sky to create stunning images. With milder nights on the way, why not give it a try?

 ??  ?? Another Barry Burgess masterpiec­e! Black Brook Falls, Cape Breton Highlands National Park at 3:16 a.m., on Sunday June 17. Barry said that “Twilight was already dawning”. The waterfall was illuminate­d with a flashlight, but the sky is all Mother...
Another Barry Burgess masterpiec­e! Black Brook Falls, Cape Breton Highlands National Park at 3:16 a.m., on Sunday June 17. Barry said that “Twilight was already dawning”. The waterfall was illuminate­d with a flashlight, but the sky is all Mother...
 ??  ?? Summer is here and so are the butterflie­s. Philomene spotted this stunning Canadian Tiger Swallowtai­l feeding on her irises at the cottage in Port Howe, N.S. Another great reason to garden!
Summer is here and so are the butterflie­s. Philomene spotted this stunning Canadian Tiger Swallowtai­l feeding on her irises at the cottage in Port Howe, N.S. Another great reason to garden!
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