Summer equinox solar radiation12/5/2023 ![]() ![]() The Sun crosses the celestial equator going southward it rises exactly due east and sets exactly due west. On the autumnal equinox, day and night are each about 12 hours long (with the actual time of equal day and night, in the Northern Hemisphere, occurring a few days after the autumnal equinox). After this date, the days start getting “shorter,” i.e., the length of daylight starts to decrease. The Sun reaches its most northern point in the sky at local noon. On the summer solstice, we enjoy the most daylight of the calendar year. The Sun crosses the celestial equator going northward it rises exactly due east and sets exactly due west. On the vernal equinox, day and night are each approximately 12 hours long (with the actual time of equal day and night, in the Northern Hemisphere, occurring a few days before the vernal equinox). The four seasons are determined by shifting sunlight (not heat!)-which is determined by how our planet orbits the Sun and the tilt of its axis. Subtract 3 hours for Pacific time, 2 hours for Mountain time, 1 hour for Central time, and so on. Note: The dates above correspond to the start of the listed seasons in the Northern Hemisphere. The First Days of the Seasons 2023 Seasons The almanacs also contain times of sunrise and sunset times and daily records of precipitation and snowfall. This information is included in our monthly almanacs. Note this will be the minimum altitude of the sun in Farmingdale, NY.Ĭ: March 19TH - 22ND Spring or Vernal Equinoxĭ: Summer Solstice June 20TH - 22ND, About 15 hours of daylightī: Autumnal Equinox September 21ST - 23RDĪ: Winter Solstice December 20TH - 22ND, About 9 hours of daylightĮ: 23 1/2 Degrees North: Tropic of CancerĪ: 23 1/2 Degrees South: Tropic of Capricornĭ: 66 1/2 Degrees South: Antarctic Circleĭaily climatological data can be analyzed to produce averages and records. Note this will be the maximum altitude of the sun in Farmingdale,NY.Ģ. What will be the noon sun angle on Dec 21 in Farmingdale, NY? Assume that Farmingdale,NY is at 40 degrees North.Ī) Where is the sun directly overhead: 23.5 deg S What will be the noon sun angle on June 21 in Farmingdale, NY? Assume that Farmingdale,NY is at 40 degrees NorthĪ) Where is the sun directly overhead: 23.5 deg Nī) What is the latitude that separates the two locations: What latitude lines are important, and how much daylight suring the season?.ġ. Very important- notice where the sun's rays are hitting the earth during the seasons. NOTICE THE TILT OF THE EARTH AND THE LOCATION THE SUN'S RAYS ARE HITTING Important pages and Smart figures Pages 29-34, Figures: 2.2, ![]() When the vertical rays of the Sun also strike the equator. (4) March 19-22, the spring or vernal, equinox in the Northern Hemisphere, ![]() The Northern Hemisphere, when the vertical rays of the Sun strike the equator (3) September 21-23, the autumnal equinox in Northern Hemisphere, when the vertical rays of the Sun are striking 23.5° south (2) December 20-22, the winter solstice for people living in the When the vertical rays of the Sun are striking 23.5° north latitude (Tropic (1) June 20-22, the summer solstice for people living in the Northern Hemisphere, Of the direct rays of the Sun and its importance to the yearly cycle of weather The four days each year given special significance based on the annual migration The seasonal changes in the angle at which the Sun's rays strike the The two most important reasons for the variation in solar energy reaching aġ. ![]() 2 - Heating Earth's Surface and AtmosphereĬHAPTER 1 and CHAPTER 2 - TEST 1 - FEBRUARY 13TH!!Įarth has two principal motions: rotation and revolution. ![]()
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