Astronomy and Photography Blog
发布时间:2026-09-10 | 浏览:1
Sep 3, 2026 Does the Sun Rise in the East? Only Twice a Year The sun rises due east on about two days a year and spends the rest of the year off to one side. In New York the sunrise point swings 63 degrees along the horizon. In Fairbanks it swings 140.
Does the Sun Rise in the East? Only Twice a Year
The sun rises due east on about two days a year and spends the rest of the year off to one side. In New York the sunrise point swings 63 degrees along the horizon. In Fairbanks it swings 140.
Sep 3, 2026 Golden Hour and Blue Hour: How Long They Actually Last Golden hour is 40 minutes at the equator and over two hours in Stockholm in December. Blue hour is closer to ten minutes than an hour. The real numbers by latitude and season.
Golden Hour and Blue Hour: How Long They Actually Last
Golden hour is 40 minutes at the equator and over two hours in Stockholm in December. Blue hour is closer to ten minutes than an hour. The real numbers by latitude and season.
Sep 3, 2026 The Shortest Day of the Year (and Why Your Earliest Sunset Already Happened) The December solstice is the shortest day, but the earliest sunset comes weeks before it and the latest sunrise weeks after. How far apart they fall depends on your latitude.
The Shortest Day of the Year (and Why Your Earliest Sunset Already Happened)
The December solstice is the shortest day, but the earliest sunset comes weeks before it and the latest sunrise weeks after. How far apart they fall depends on your latitude.
Jul 25, 2024 What is the Summer Solstice and When Is It? The summer solstice is the moment the sun reaches its farthest point north. Exact dates and times through 2030, how much daylight you get, and what the solstice is not.
What is the Summer Solstice and When Is It?
The summer solstice is the moment the sun reaches its farthest point north. Exact dates and times through 2030, how much daylight you get, and what the solstice is not.
Aug 24, 2023 Astronomical Definitions: A Comprehensive Guide Plain-English definitions for sunrise, solar noon, the three twilights, dusk and dawn, moon phases, eclipses, equinoxes and solstices, with the details most guides get wrong.
Astronomical Definitions: A Comprehensive Guide
Plain-English definitions for sunrise, solar noon, the three twilights, dusk and dawn, moon phases, eclipses, equinoxes and solstices, with the details most guides get wrong.
Apr 27, 2023 How Long After Sunset Does It Get Dark? About 70 minutes near the equator, over two hours farther north, and never in London in June. Twilight times by latitude and season, and why the 30-minute rule breaks.
How Long After Sunset Does It Get Dark?
About 70 minutes near the equator, over two hours farther north, and never in London in June. Twilight times by latitude and season, and why the 30-minute rule breaks.
Apr 26, 2023 How Elevation Affects Sunset and Dusk Times Climbing higher pushes sunset later, by roughly 5 minutes at 1,000 meters. Here is the actual math, why the popular rule of thumb is wrong, and why dusk gets shorter.
How Elevation Affects Sunset and Dusk Times
Climbing higher pushes sunset later, by roughly 5 minutes at 1,000 meters. Here is the actual math, why the popular rule of thumb is wrong, and why dusk gets shorter.
Apr 16, 2023 Why Watching the Sunset Makes You Happier (The Science of Light) Sunset viewing does lift your mood, but not for the reasons most articles claim. Here is what the research actually shows about evening light, cortisol, and awe.
Why Watching the Sunset Makes You Happier (The Science of Light)
Sunset viewing does lift your mood, but not for the reasons most articles claim. Here is what the research actually shows about evening light, cortisol, and awe.
Feb 20, 2023 Sunset vs Dusk: The Difference, and Which Is Worth Staying For Sunset is the instant the sun disappears. Dusk is the end of twilight, and there are three of them. How far apart they fall by latitude, and which view is worth waiting out.
Sunset vs Dusk: The Difference, and Which Is Worth Staying For
Sunset is the instant the sun disappears. Dusk is the end of twilight, and there are three of them. How far apart they fall by latitude, and which view is worth waiting out.
Feb 20, 2023 How is Sunrise Calculated? (Refraction, Algorithms, and Math) Sunrise occurs when the sun's upper limb hits the horizon. Learn the math behind the 90.833 degree zenith angle, atmospheric refraction, and the hour angle formula.
How is Sunrise Calculated? (Refraction, Algorithms, and Math)
Sunrise occurs when the sun's upper limb hits the horizon. Learn the math behind the 90.833 degree zenith angle, atmospheric refraction, and the hour angle formula.
Feb 17, 2023 Does Air Pollution Actually Make Sunsets Better? Common wisdom says pollution makes sunsets prettier. In most cases it does the opposite, muting the reds and oranges. Volcanic ash is the rare exception.
Does Air Pollution Actually Make Sunsets Better?
Common wisdom says pollution makes sunsets prettier. In most cases it does the opposite, muting the reds and oranges. Volcanic ash is the rare exception.
Feb 13, 2023 Sunsets are Better in the Winter: Here's Why Cold air holds up to 15 times less water vapor than summer air, and water vapor is what turns clean color into haze. The real reasons winter sunsets look better.
Sunsets are Better in the Winter: Here's Why
Cold air holds up to 15 times less water vapor than summer air, and water vapor is what turns clean color into haze. The real reasons winter sunsets look better.
Feb 13, 2023 Are Sunsets the Same Everywhere? No. A sunset takes 2 minutes at the equator and 9 minutes in Alaska, and dry desert air produces far richer color than humid coastal air. What changes and why.
Are Sunsets the Same Everywhere?
No. A sunset takes 2 minutes at the equator and 9 minutes in Alaska, and dry desert air produces far richer color than humid coastal air. What changes and why.
Feb 11, 2023 Can There Be a Beautiful Sunset Without Clouds? Yes, and a cloudless sky shows you things a cloudy one hides: Earth's shadow, the Belt of Venus, the purple light, and the green flash. What to look for and when.
Can There Be a Beautiful Sunset Without Clouds?
Yes, and a cloudless sky shows you things a cloudy one hides: Earth's shadow, the Belt of Venus, the purple light, and the green flash. What to look for and when.