Mark your calendars because the most spectacular golden hour of the year is about to happen in Toronto. The rare phenomenon happens when the setting sun aligns perfectly with the city’s east-west streets.

The spectacle even has its own name, “Torontohenge,” named after the same phenomenon in Manhattan called “Manhattanhenge,” coined by astrophysicist Neil deGrasse Tyson, according to The Weather Network.

The sun’s rays between the skyscrapers create an effect similar to Stonehenge, a prehistoric sundial-shaped monument in England, hence the “henge” in its name.

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“It’s such a neat thing in Toronto because of the downtown streets, with the canyon walls formed with tall buildings on either side. It’s just a unique sight to see the sun setting in between those rows of buildings,” said civil engineer Ralph Bouwmeester to CBC News.

A sun and shadow modelling blog predicts that this year’s Torontohenge will happen on Monday, October 25th at precisely 6:18 p.m., the 4th and final Torontohenge sunset of 2021.

The Weather Network says that the best places to catch the sunset are along skyscraper-lined roads in the city’s downtown core with unobstructed views of the western horizon, including Adelaide St, and Bloor St, and especially King St outside of Roy Thompson Hall.

 

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It’s possible that the rare sunset will be visible two evenings in a row, with the Half-Sun version appearing the evening before on October 24th and the Full-Sun version on the 25th.

Right now, The Weather Network is calling for a mix of sun and clouds and a high of just 11 C on October 25th, so our chances of a clear Torontohenge sunset are looking promising. But, if you plan to take photos, you might want to wear a pair of gloves.