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Moon Phase - Day | Calendars Calendars exhibit Webexhibit Home Node view Years & months Various Calendars Our Week Timeline About Overview Astronomy Perpetual calendar Month of Moons Today's Moon History Definitions International Do it yourself A page from the "Calendars" exhibit... What’s the phase of the moon today, or any other day? Choose a date and discover how the moon will likely appear on that day. 9 December 2013 Choose Date: January February March April May June July August September October November December First Quarter Moon « Earlier Later » The moon changes in appearance and location in the sky everyday, which is why we refer to the moon by its phases: new moon, new crescent moon, 1st quarter moon, waxing gibbous, full moon, waning gibbous, 3rd quarter, and old crescent. See how the phases change over the course of the moon’s 29.53-day cycle. Step outside! Keep track of the moon in your night sky, and chart the changes yourself. See our tips on how to chart the moon in the sky and explore the phases of the moon over the course of its 29.53-day cycle. In the ... http://www.webexhibits.org/calendars/moon.html · 9.2k |
Moon Phase - Month | Calendars Calendars exhibit Webexhibit Home Node view Years & months Various Calendars Our Week Timeline About Overview Astronomy Month of Moons Today's Moon History Definitions International Do it yourself A page from the "Calendars" exhibit... With this interactive moon phase calendar, you can choose a month and year and see why lunar months aren’t an exact match with calendar months. September 2010 Choose Month and Year: January February March April May June July August September October November December Mon Tue Wed Thu Fri Sat Sun 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 « Earlier Later » For millennia, calendars were constructed according to the phases of the moon. We can only imagine what ancient astronomers thought as they scanned the night sky and saw the constantly changing appearance of this large celestial body. Step outside! Keep track of the moon in your night sky, and chart the changes yourself. See our tips on how to chart the moon in the sky and explore the phases ... http://www.webexhibits.org/calendars/moon-month.html · 18.2k |
Do It Yourself | Calendars Calendars exhibit Webexhibit Home Node view Years & months Various Calendars Our Week Timeline About Overview Astronomy Perpetual calendar Month of Moons Today's Moon History Definitions International Do it yourself A page from the "Calendars" exhibit... You can make a calendar page, watch the moon everyday for a month, and learn about the phases of the moon. The moon changes in appearance and location in the sky everyday, which is why we refer to the moon by its phases: new moon, new crescent moon, 1st quarter moon, waxing gibbous, full moon, waning gibbous, 3rd quarter, and old crescent. After 29 days you will have a visual record of the phases of the moon, and a better understanding of all the phases. In other words, you can gain the first-hand experience of an astronomer by watching the sky everyday. To see how your observations of the real sky match up with predictions, see also a simulation of whole month or single day at a time. Materials: A calendar page where you can record information in each box. (Note: you can make your own calendar page on a sheet ... http://www.webexhibits.org/calendars/moon-diy.html · 13.3k |
Our Year | Calendars Calendars exhibit Webexhibit Home Node view Years & months Various Calendars Our Week Timeline About Overview Astronomy Perpetual calendar Month of Moons Today's Moon History Definitions International Do it yourself A page from the "Calendars" exhibit... Illuminations of Dante’s Divine Comedy by Giovanni di Paolo (15th century) Dante and Beatrice reach the sun, shown as a golden wheel sending golden rays to the landscape below. The Sun, located in the middle of the orbs, with three lesser above and three below, like the heart in the middle of the body, or a wise king in the middle of his kingdom. The calendar is based on three key astronomical events. A day, which is the time from one sunrise to the next sunrise — one complete rotation of the Earth. A year, which is approximately 365.24 days — one complete orbit of Earth around the Sun. A month, which is approximately 29.53 days — one complete orbit of the Moon around the Earth. Since these time spans are not easily divided, calendars have always been imperfect. Some were rooted in tradition, while others ... http://www.webexhibits.org/calendars/year.html · 10.8k |
Early Roman Calendar | Calendars Calendars exhibit Webexhibit Home Node view Years & months Various Calendars Our Week Timeline About Overview Chinese Christian Indian Islamic Jewish Others Ancient French Future Mayan Roman Perpetual A page from the "Calendars" exhibit... The Romans borrowed parts of their earliest known calendar from the Greeks. The calendar consisted of 10 months in a year of 304 days. The Romans seem to have ignored the remaining 61 days, which fell in the middle of winter. The 10 months were named Martius, Aprilis, Maius, Junius, Quintilis, Sextilis, September, October, November, and December. The last six names were taken from the words for five, six, seven, eight, nine, and ten. Romulus, the legendary first ruler of Rome, is supposed to have introduced this calendar in the 700s B.C.E. According to tradition, the Roman ruler Numa Pompilius added January and February to the calendar. This made the Roman year 355 days long. To make the calendar correspond approximately to the solar year, Numa also ordered the addition every other year of a month called Mercedinus. ... http://www.webexhibits.org/calendars/calendar-roman.html · 35.6k |
Indian Calendar | Calendars Calendars exhibit Webexhibit Home Node view Years & months Various Calendars Our Week Timeline About Overview Chinese Christian Indian Islamic Jewish Others Ancient French Future Mayan Roman Perpetual A page from the "Calendars" exhibit... Festival. Surajkund Mela, Haryana, India A group of women dress colorfully for an Indian festival. As a result of a calendar reform in 1957 C.E., the National Calendar of India is a formalized lunisolar calendar in which leap years coincide with those of the Gregorian calendar (Calendar Reform Committee, 1957). However, the initial epoch is the Saka Era, a traditional epoch of Indian chronology. Months are named after the traditional Indian months and are offset from the beginning of Gregorian months (see the table below). In addition to establishing a civil calendar, the Calendar Reform Committee set guidelines for religious calendars, which require calculations of the motions of the Sun and Moon. Tabulations of the religious holidays are prepared by the India Meteorological Department and published annually in The ... http://www.webexhibits.org/calendars/calendar-indian.html · 18.4k |
Other Ancient Calendars | Calendars Calendars exhibit Webexhibit Home Node view Years & months Various Calendars Our Week Timeline About Overview Chinese Christian Indian Islamic Jewish Others Ancient French Future Mayan Roman Perpetual A page from the "Calendars" exhibit... When did ancient months start? When was the ancient new year? Babylonian calendar Egyptian calendar Other calendars used in the ancient Near East The rainy season Synergy with the earth Cro-magnon man (Lascaux caves in France) Iceland (before literacy) → See detailed information on the early Roman calendar. When did ancient months start? In the eighth century B.C.E., civilizations all over the world either discarded or modified their old 360 day calendars. The 360 day calendars had been in use for the greater part of a millennium. In many places, month lengths immediately after that change were not fixed, but were based instead upon observation of the sky. Priest-astronomers were assigned the duty of declaring when a new month began – it was usually said to have started at the first sighting of a new moon. ... http://www.webexhibits.org/calendars/calendar-ancient.html · 49.5k |
Our Week | Calendars Calendars exhibit Webexhibit Home Node view Years & months Various Calendars Our Week Timeline About Our Week Connotations A page from the "Calendars" exhibit... Our seven day week has been used for millennia by the Christian, Jewish, Islamic, Persian and Chinese calendars, yet its origins are most uncertain. What Is the Origin of the 7-Day Week? What Do the Names of the Days of the Week Mean? What is the System behind the Planetary Day Names? Has the 7-Day Week Cycle Ever Been Interrupted? Which Day is the Day of Rest? What Is the First Day of the Week? What Is the Week Number? How can I calculate the week number? Do Weeks of Different Lengths Exist? What day was a certain date? Contemporary Mask. Mexico. Since time immemorial, the sun and the moon have inspired artists. Incan field workers would chant, "The sun rains gold, the moon rains silver." In art, the warm, golden sun is often depicted as male, while the cool, silver moon is portrayed as female. What Is the Origin of the 7-Day Week? Digging into the history of the 7-day week is a very complicated ... http://www.webexhibits.org/calendars/week.html · 20.1k |
Astronomical Basis Of Calendars | Calendars Calendars exhibit Webexhibit Home Node view Years & months Various Calendars Our Week Timeline About Overview Astronomy Perpetual calendar Month of Moons Today's Moon History Definitions International Do it yourself A page from the "Calendars" exhibit... The principal astronomical cycles are the day (based on the rotation of the Earth on its axis), the year (based on the revolution of the Earth around the Sun), and the month (based on the revolution of the Moon around the Earth). The complexity of calendars arises because these cycles of revolution do not comprise an integral number of days, and because astronomical cycles are neither constant nor perfectly commensurable with each other. What are different measures of the year? What are Equinoxes and Solstices? Did the church study astronomy? Didn’t the church condemn Galileo? How did the observatories work? How did Cassini prove Kepler was right? What are different measures of the year? The tropical year is defined as the mean interval between vernal equinoxes; it corresponds to the cycle of the seasons ... http://www.webexhibits.org/calendars/year-astronomy.html · 24.4k |
Museum Store | Calendars Calendars exhibit Webexhibit Home Node view Years & months Various Calendars Our Week Timeline About Introduction Credits Books Museum Store Citations A page from the "Calendars" exhibit... (see also Books, and credits) We are often asked about cool calendar-related things we might recommend. The following items relate to calendars and our solar system. Items purchased through these links, as well as through the recommended books, help support WebExhibits. Calendars Calendars can be more than utilitarian; they’re a fun way to express your interests or personality while still keeping track of the days. Whether for yourself or as a gift for a friend, family member, or coworker, the perfect calendar will bring a smile to your face every day of the year – and support WebExhibits in the process. See calendars at Amazon.com Globes of the Earth... In an age where Google Earth and MapQuest make it seem as though the earth’s landmasses and oceans are a click away, traditional globes may seem quaint. Yet spinning a globe fuels flights of imagination, conjures up ... http://www.webexhibits.org/calendars/museumstore.html · 16.9k |
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