The @SunChips 'solar' billboard we designed for @Fritolay was unveiled on Earth Day 2008 in Oakland CA.
Still one of my proudest designs...
https://www.youtube.com/watch?v=OMD7YJ2UqsQ
Wednesday, April 22, 2026
SunChips Solar Billboard
Wednesday, January 21, 2026
Torontohenge 2026
Torontohenge is the name given for the phenomenon that occurs four times per year when the sun rises or sets in line with Toronto's major east-west streets downtown. The event, twice per year at sunrise, and twice at sunset, gives photographers great opportunities to capture the sun as its top edge grazes the horizon between the canyon walls of buildings on either side of the street.
Photo courtesy of Rudy Limeback @rudydotca
Although Torontohenge technically falls on the dates given below, great photos can be taken for about a week before the August and October dates and a week after the
February and April dates as the rising/setting sun passes over the
street. Not great for driving, but quite a sight just the same.
The Torontohenge dates for 2026 are:
February 15 - 5:48 PM EST
April 19 - 6:28 AM EDT
August 23 - 6:31 AM EDT
October 25 - 6:18 PM EDT
If you prefer to see the sun perched on the horizon (i.e. bottom of sun touches horizon), then subtract 3 minutes from the times shown above for February and October, and add 3 minutes in April and August.
See monthly Toronto sunrise and sunset times here...
Warning for Drivers and Pedestrians
Despite the opportunities for photographers, conditions for motorists and pedestrians may be difficult for a week or more after the February and April dates and before the August and October dates.
NOTE: The first and last hours of daylight are typically the worst. Be prepared, and be extra careful.
Cheers, Ralph
Monday, March 17, 2025
Why are there more than 12 hours of daylight on the Equinoxes?
The Equinox is not until March 20th when Toronto will have 12h 10m of daylight – not exactly “equal day, equal night” - however, on the Equinoxes there are about 12 hours between the times at which the centre of the actual sun’s disk aligns with the horizons (i.e. at 0° altitude).
Now, there are two reasons why we actually have more than 12 hours of daylight on the Equinox…
2) the refraction of the sun's rays through the atmosphere – yes, light bends around the earth.
See diagram below.
When we first see the sun at sunrise, or when we last see it slip below the horizon at sunset, the sun is actually below the horizon. The following explains…
The semi-diameter of the sun is about 16 minutes of arc and average refraction accounts for about 34 minutes of arc. So, since the true sun’s centre is about 50 minutes of arc (i.e. about 1.5 sun diameters) below the horizon when we see a sunrise or sunset, the overall length of daylight increases.
Saturday, March 1, 2025
How much more daylight can you expect in March?
If you live in southern Ontario, the number of daylight hours will increase in March by about an hour and a half. Great news for those tired of the long winter we've had. Further north, the increase will be even greater. To the south, however, the increase becomes less - to essentially zero at the Equator where day and night are each 12 hours long all year.
To give you an idea of how the increase in daylight hours in March varies with latitude, the following is a summary in 5° latitude intervals. The cities listed serve as an approximate guide.
- 60°N - 2h 44m - Seward AK, north limit of BC, AB, SK and MB, mid-Hudson Bay
- 55°N - 2h 15m - Ketchikan AK, north end of James Bay, Schefferville QC
- 50°N - 1h 52m - Kelowna BC, Medicine Hat AB, Winnipeg MB, Sept-Iles QC
- 45°N - 1h 34m - Yellowstone Park WY, Minneapolis MN, Bracebridge ON, Bangor ME
- 40°N - 1h 19m - Boulder CO, Columbus OH, Philadelphia PA
- 35°N - 1h 06m - Edwards AFB CA, Albuquerque NM, Memphis TN, Charlotte NC
- 30°N - 0h 54m - Houston TX, New Orleans LA, Jacksonville FL
- 25°N - 0h 44m - Key Largo FL
It does not matter where you are east-west; longitude is not a factor. Enjoy
Cheers, Ralph
Thursday, February 6, 2025
Torontohenge 2025
Torontohenge is the name given for the phenomenon that occurs four times per year when the sun rises or sets in line with Toronto's major east-west streets downtown. The event, twice per year at sunrise, and twice at sunset, gives photographers great opportunities to capture the sun as its top edge grazes the horizon between the canyon walls of buildings on either side of the street.
Photo courtesy of Rudy Limeback @rudydotca
Although Torontohenge technically falls on the dates given below, great photos can be taken for about a week before the August and October dates and a week after the
February and April dates as the rising/setting sun passes over the
street. Not great for driving, but quite a sight just the same.
The Torontohenge dates for 2025 are:
February 15 Sunset - 5:48 PM EST
April 19 Sunrise - 6:28 AM EDT
August 23 Sunrise - 6:31 AM EDT
October 25 Sunset - 6:18 PM EDT
See monthly Toronto sunrise and sunset times here...
Warning for Drivers and Pedestrians
Despite the opportunities for photographers, conditions for motorists and pedestrians may be difficult for a week or more after the February and April dates and before the August and October dates.
NOTE: The first and last hours of daylight are typically the worst. Be prepared, and be extra careful.
Cheers, Ralph
Wednesday, October 30, 2024
2024 Halloween Sunset Times
#HappyHalloween #Halloween2024
Have fun. Be safe.
https://www.sunposition.com/halloweensunset2024.html
Wednesday, January 17, 2024
Torontohenge 2024
Torontohenge is the name given for the phenomenon that occurs four times per year when the sun rises or sets in line with Toronto's major east-west streets downtown. The event, twice per year at sunrise, and twice at sunset, gives photographers great opportunities to capture the sun as its top edge grazes the horizon between the canyon walls of buildings on either side of the street.
Photo courtesy of Rudy Limeback @rudydotca
Although Torontohenge technically falls on the dates given below, great photos can be taken for about a week before the August and October dates and a week after the
February and April dates as the rising/setting sun passes over the
street. Not great for driving, but quite a sight just the same.
The Torontohenge dates for 2024 are:
February 15 Sunset - 5:47 PM EST
April 19 Sunrise - 6:27 AM EDT
August 23 Sunrise - 6:32 AM EDT
October 25 Sunset - 6:17 PM EDT
See monthly Toronto sunrise and sunset times here...
Warning for Drivers and Pedestrians
Despite the opportunities for photographers, conditions for motorists and pedestrians may be difficult for a week or more after the February and April dates and before the August and October dates.
NOTE: The first and last hours of daylight are typically the worst. Be prepared, and be extra careful.
Cheers, Ralph
Monday, October 30, 2023
Monday, January 2, 2023
Torontohenge 2023
Torontohenge is the name given for the phenomenon that occurs four times per year when the sun rises or sets in line with Toronto's major east-west streets downtown. The event, twice per year at sunrise, and twice at sunset, gives photographers great opportunities to capture the sun as its top edge grazes the horizon between the canyon walls of buildings on either side of the street.
Photo courtesy of Rudy Limeback @rudydotca
Although Torontohenge technically falls on the dates given below, great photos can be taken for about a week before the August and October dates and a week after the
February and April dates as the rising/setting sun passes over the
street. Not great for driving, but quite a sight just the same.
The Torontohenge dates for 2023 are:
February 15 Sunset - 5:48 PM EST
April 20 Sunrise - 6:27 AM EDT
August 23 Sunrise - 6:31 AM EDT
October 25 Sunset - 6:19 PM EDT
See monthly Toronto sunrise and sunset times here...
Warning for Drivers and Pedestrians
Despite the opportunities for photographers, conditions for motorists and pedestrians may be difficult for a week or more after the February and April dates and before the August and October dates.
NOTE: The first and last hours of daylight are typically the worst. Be prepared, and be extra careful.
Cheers, Ralph
Saturday, October 29, 2022
Friday, February 4, 2022
Torontohenge 2022
Torontohenge is the name given for the phenomenon that occurs four times per year when the sun rises or sets in line with Toronto's major east-west streets downtown. The event, twice per year at sunrise, and twice at sunset, gives photographers great opportunities to capture the sun as its top edge grazes the horizon between the canyon walls of buildings on either side of the street.
Photo courtesy of Rudy Limeback @rudydotca
Although Torontohenge technically falls on the dates given below, great photos can be taken for about a week before the August and October dates and a week after the
February and April dates as the rising/setting sun passes over the
street. Not great for driving, but quite a sight just the same.
The Torontohenge dates for 2022 are:
February 15 - 5:48 PM EST
April 19 - 6:28 AM EDT
August 23 - 6:31 AM EDT
October 25 - 6:18 PM EDT
See monthly Toronto sunrise and sunset times here...
Warning for Drivers and Pedestrians
Despite the opportunities for photographers, conditions for motorists and pedestrians may be difficult for a week or more after the February and April dates and before the August and October dates.
NOTE: The first and last hours of daylight are typically the worst. Be prepared, and be extra careful.
Cheers, Ralph
Monday, October 25, 2021
Saturday, December 19, 2020
Torontohenge 2021
Torontohenge is the name given for the phenomenon that occurs four times per year when the sun rises or sets in line with Toronto's major east-west streets downtown. The event, twice per year at sunrise, and twice at sunset, gives photographers great opportunities to capture the sun as its top edge grazes the horizon between the canyon walls of buildings on either side of the street.
Photo courtesy of Rudy Limeback @rudydotca
Although Torontohenge technically falls on the dates given below, great photos can be taken for about a week before the August and October dates and a week after the February and April dates as the rising/setting sun passes over the street. Not great for driving, but quite a sight just the same.
The Torontohenge dates for 2021 are:
February 15 - 5:48 PM EST
April 19 - 6:28 AM EDT
August 23 - 6:31 AM EDT
October 25 - 6:18 PM EDT
See monthly Toronto sunrise and sunset times here...
Warning for Drivers and Pedestrians
Despite the opportunities for photographers, conditions for motorists and pedestrians may be difficult for a week or more after the February and April dates and before the October and August dates. NOTE: The first and last hours of daylight are typically the worst. Be prepared, and be extra careful.
Cheers, Ralph
Sunday, October 4, 2020
Thursday, April 2, 2020
Human Sundial Project for Kids
During these challenging times, here's a fun and simple outdoor project to do with your kids as the weather improves. Not only is it fun, it is very educational. This project will demonstrate how the sun moves east to west through the day, and how its height changes with the seasons.
Hope this brightens your day a bit!
What you will need...
- a watch or a clock
- an open area of lawn (ideally at least 6m x 1.5m (20' x 5') for the sundial to work between 10 AM and 5 PM)
- stones (size is up to you) or other markers, 16 for the hours between sunrise and sunset in June
- a shadow-caster, your child
- head outside and place two stones to mark the spot for the shadow-caster to stand
- have the shadow-caster stand facing north (roughly) with their toes just touching the two stones
- wait for the top of an hour (e.g. 8, 9, 10, etc.) and place a stone at the tip of the shadow
- repeat Step 3 each hour on the hour (See Figures below to see how your sundial will look when done.)
- if you like, paint the hour number on each stone
A time-lapse animation is provided below the Figures showing how your shadow will move during the day.
See our time-lapse animation.
Notes...
- Since the sun runs slightly ahead of or behind your watch time, depending on the time of year, you may want to adjust your sundial every couple of weeks or so. Simple fix, move the stones to match your watch.
- Probably more noticable than the sundial running fast or slow, the shadows will begin to get shorter as we approach the summer solstice (June 20 in 2020). Again, you can simply move the stones to match your watch.
- If you like, gather up more stones and add another row next month (preferably on the same day of the month), and the month after that, etc. In this way, you can see how much higher the sun gets between now and the first day of summer.
- After the first day of summer, you will notice the shadows getting longer again.
Cheers, Ralph
Monday, March 2, 2020
Sun Glare and Traffic Safety – February 2020
When too much light - or not enough - can be road danger https://t.co/8g8IozStG1 #RoadSafety #SunGlare
— Ralph Bouwmeester (@SunPosition) February 5, 2020
Thank you Denis, same to you.
— Ralph Bouwmeester (@SunPosition) February 5, 2020
Cars should not be comfy entertainment centres. #RoadSafety
— Ralph Bouwmeester (@SunPosition) February 13, 2020
How to make drivers more attentive and careful? Replace the steering wheel airbag with a 6” spike. #RoadSafety
— Ralph Bouwmeester (@SunPosition) February 13, 2020
Cheers, Ralph
Sun and Shade in Urban Development – February 2020
Major #BC regeneration project approved in #Surrey https://t.co/yMbhNl9Tt2 #urban #development
— Ralph Bouwmeester (@SunPosition) February 5, 2020
WOW!!! Almost-built New York tower could lose 20 floors - Construction Canada https://t.co/7OqVx8nwS6 #urban #development
— Ralph Bouwmeester (@SunPosition) February 26, 2020
Cheers, Ralph
Miscellaneous Sun and Shadow Items – February 2020
Sunset in #Toronto is back to 5:30 PM. Nice. https://t.co/CjjRupE4Nu
— Ralph Bouwmeester (@SunPosition) February 2, 2020
The first #Torontohenge of 2020 occurs this month - https://t.co/Idw30sFJ3L #Toronto @shawnmicallef @glynbowerman
— Ralph Bouwmeester (@SunPosition) February 3, 2020
#Torontohenge cometh! Details here. #Torontohttps://t.co/Idw30sFJ3L pic.twitter.com/IkIShogj1D
— Ralph Bouwmeester (@SunPosition) February 14, 2020
i took the above picture on Feb 18 last year, also a couple of days after #TorontoHenge, from Queen St at Church, with the sun shining right through the new Eatons-Simpsons walkway (or whatever it's called now)...
— Rudy Limeback (@rudydotca) February 17, 2020
/2
and i'm pleased i was asked to share this picture with Ralph Bouwmeester (@SunPosition) to illustrate his great TorontoHenge web page, where you can find the dates of the three other #TorontoHenge events this year
— Rudy Limeback (@rudydotca) February 17, 2020
/3https://t.co/hB0RfYvPgv
Awesome #Torontohenge pictures Rudy @rudydotca. Thank you for sharing and thank you for the shoutout. #Toronto #sunset
— Ralph Bouwmeester (@SunPosition) February 17, 2020
Cheers, Ralph
Monday, February 3, 2020
Torontohenge 2020
Torontohenge is the name given for the phenomenon that occurs four times per year when the sun rises or sets in line with Toronto's major east-west streets downtown. The event, twice per year at sunrise, and twice at sunset, gives photographers great opportunities to capture the sun as its top edge grazes the horizon between the canyon walls of buildings on either side of the street.
Photo courtesy of Rudy Limeback @rudydotca
Although Torontohenge technically falls on the dates given below, great photos can be taken for about a week before the August and October dates and a week after the February and April dates as the rising/setting sun passes over the street. Not great for driving, but quite a sight just the same.
The Torontohenge dates for 2020 are:
February 15 - 5:47 PM
April 19 - 6:27 AM
August 23 - 6:32 AM
October 25 - 6:17 PM
See monthly Toronto sunrise and sunset times here...
Warning for Drivers and Pedestrians
Despite the opportunities for photographers, conditions for motorists and pedestrians may be difficult for a week or more after the February and April dates and before the October and August dates. NOTE: The first and last hours of daylight are typically the worst. Be prepared, and be extra careful.
Cheers, Ralph
Sunday, February 2, 2020
Reconstruction of Collisions Involving Sun Glare
This pretty much sums up the approach we take in collision reconstructions involving sun glare. #SunGlare #RoadSafety https://t.co/3MaKqFjAqa
— Ralph Bouwmeester (@SunPosition) January 24, 2020
Cheers, Ralph
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