NOTES
June 21 at 02:46 ADT, Sun reached its maximum northern declination above the Celestial Equator which resulted in its highest noon altitude for Northern Hemisphere skies, and gave the longest period of solar daylight. Since that moment Sun’s declination began to decrease. Fortunately, around the time of the solstice, Sun’s daily changes are very small, effecting only slight changes in the length of day and altitude of Sun. It will be deep into July before we sense the decreases. 21:08 on June 27 was the latest sunset at Horton Bluff. June 16 was the earliest sunrise. Starting June 28th the day is shortening by a few seconds at both ends of the day.
The 7-day spacing of each green analemma dot, shows the rate of change during a week Compare this last week with a week near the equinox, and also, with a week near one of the solstice positions.
Get current information regarding Where the planets are...and a current star chart.
Compare Sun’s position today with April 21, March 20 at 08:44 ADT , March 19 at noon and Dec 21st diagram
Day lengths:
Winter Solstice 8h 45min, noon altitude: 21.5 °
Equinox* night and day are approximately equal everywhere on Earth: 12h each.
REFERENCES: An excellent reference for astronomical data: the Observers Handbook 2009, Royal Astronomical Society of Canada, Patrick Kelly editor.
The analemma, sky background, times and positions are generated by Starry Night Pro. The The overall layout and design is by Sherm.
