It's summer, and I'm living at a latitude approximately that of the northern tip of Maine.  Which is why it's easy to lose track of time completely:  how can it be quarter to ten at night and still light enough outside to read easily?  For the same reason, I guess, that the birds greet the day with song when the little hand is still pointing to the four.  Strange experiences for a Florida girl.

Posted by sursumcorda on Friday, June 12, 2015 at 3:43 pm | Edit
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This is one of those questions that I have always meant to investigate. We noticed when we went to Montana several years ago, that it was light out until 10 o'clock at night. I wondered if it was light so late because of our latitude or because we were at the western end of the time zone (or a combination). It seemed our latitude at home or in Maine was not that different, but the time of sunset seemed quite different.

So, according to University of Nebraska at Lincoln's Daylight Hours Explorer: http://astro.unl.edu/classaction/animations/coordsmotion/daylighthoursexplorer.html

Hours of Daylight on June 13:
Emmen, Switz (47 deg N): 15.7
Kalispell, MT (48 deg N): 15.8
Bath, ME (44 deg N): 15.3
Hartford, CT (42 deg N): 15.0
Orlando, FL (28 deg N): 13.8

At this time of year there are 2 more hours of daylight in Emmen than in FL.

This map also shows that time zone has a role. http://gizmodo.com/how-solar-time-compares-to-standard-time-around-the-wor-1535080399

Thank you for pushing me to finally look this up. When we did Learner.org's mystery class several years ago, we learned a lot about daylight and seasons. A fantastic game. At least I thought so. The boys were less enthused. https://www.learner.org/jnorth/mclass/

The University of Nebraska at Lincoln has a lot of other simulations that I highly recommend. http://astro.unl.edu/interactives/

Sarah



Posted by dstb on Saturday, June 13, 2015 at 9:42 am

Thanks, Sarah, for reporting on this.



Posted by SursumCorda on Saturday, June 13, 2015 at 3:46 pm

Yes, the location in the time zone also plays a role. We are at about 8 E, which puts us on the western end of the time zone and thus already shifts daylight nearly 30 minutes later than clock time.

However, Orlando - 81W - is also on the western end of its time zone, which stretches from 67.5 to 82.5, at least mathematically. So that effect would cancel out, and leave the extra hour of daylight and a longer period of dusk to confuse Linda.



Posted by Stephan on Sunday, June 14, 2015 at 3:44 pm

I find the long dusk the most confusing, because it provides quite a bit of light long after sunset.



Posted by Janet on Wednesday, June 17, 2015 at 8:03 am
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