Skip to content

One last look before the sun takes its show off-Broadway

September 25, 2018

Sunrise on September 24th, as seen straight down West Broadway Avenue from the southeast corner of Spruce Street.

The autumnal equinox occurred here in Vancouver B.C. on Saturday evening (September 22), officially marking the end of summer and the beginning of autumn.

In astronomical terms this means that at around 7 p.m. Saturday—for only the second time in every year-long revolution of planet Earth around the Sun—the solar rays were pointing straight at earth’s equator, with certain practical results.

For one thing, the daytime and nighttime were of approximately equal duration all over the planet. (“equinox” combines the Latin words for “equal” and “night”.)

And for another thing, the sun rose exactly due east and set exactly due west.

Look on the sunny side, it’s all downhill from here

Reflected sunrise on West Broadway Avenue, seen from Birch Street at 7:14 a.m.

In down-to-earth terms for Vancouverites, this means that for the last few days the sun has seemed to rise exactly from the far eastern end of East Broadway Avenue and likewise it appears to be setting on the far western end of West Broadway Avenue (which I know for a fact is at Alma Street).

This illusion won’t last long. Thanks to way Earth rotates on an axis tilted at about 23.4 degree to the plane of its orbit around the Sun, our northern hemisphere will continue to turn away from direct sunlight, giving us winter and taking summer to the southern hemisphere. To our eyes the sun will appear, day-by-day, to slide southward and rise less and less high in its arc through the sky.

We won’t turn the corner now until the winter solstice (December 21), when we “enjoy” both the shortest day and the longest night of the year. After that the sun will begin to rise steadily higher—both in our sky and our estimation. Click the images to enlarge them.

South Granville building alight with the reflected sunrise, as seen from the south side alley of the 1400 block West Broadway at 7:16 a.m.

From → Fairview, Sunrises

Leave a Comment

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google+ photo

You are commenting using your Google+ account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s

This site uses Akismet to reduce spam. Learn how your comment data is processed.

%d bloggers like this: