Months & Seasons

A:

The reason there are four seasons is that the earth is tilted 23.5 degrees on its axis. For half the year, this tilt causes one half of the earth to tilt toward the sun while the other half tilts away. This changes every six months, creating the seasons.

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  • On what day does fall start?

    Q: On what day does fall start?

    A: Among astronomers, the general consensus for the start of the fall season is when the sun's central disk traverses the celestial equator in a southward direction, normally occurring around the third week of September. However, meteorologists mark the beginning of autumn on September 1.
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  • What do you call the first day of spring?

    Q: What do you call the first day of spring?

    A: Another name for the first day of spring is the vernal equinox. "Vernal" comes from the Latin word for "spring," and "equinox" comes from a Latin word meaning "time of equal days and nights."
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  • Why is an extra day added to February every four years?

    Q: Why is an extra day added to February every four years?

    A: An extra day is added to February every four years to synchronize the Gregorian calendar with the solar calendar. One year in the solar calendar is 5 hours, 48 minutes and 46 seconds longer than one year in the Gregorian calendar, the calendar used by most modern countries.
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  • How many days is it from the begining of the year until spring?

    Q: How many days is it from the begining of the year until spring?

    A: The first day of spring occurs on March 20 in the Northern Hemisphere, 79 days after the first day of the year. During leap years, when the month of February has 29 days instead of 28, the first day of spring falls on the 80th day of the year.
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  • How short is the shortest day of the year?

    Q: How short is the shortest day of the year?

    A: The length of the shortest day of the year depends on the location. In the United States, some areas get less than 4 hours of sunshine on the shortest day. In places like Washington and New York, the shortest day lasts for up to 9 1/2 hours.
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  • When does summer begin?

    Q: When does summer begin?

    A: The season of summer begins with the summer solstice. The summer solstice is the day in which the most amount of sunlight occurs during the day. In the Northern Hemisphere, the summer solstice is around June 21st. In the Southern Hemisphere, it takes place around December 21st.
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  • Why are there four seasons?

    Q: Why are there four seasons?

    A: The reason there are four seasons is that the earth is tilted 23.5 degrees on its axis. For half the year, this tilt causes one half of the earth to tilt toward the sun while the other half tilts away. This changes every six months, creating the seasons.
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  • What months have 31 days?

    Q: What months have 31 days?

    A: There are seven months in the Gregorian calendar that have 31 days. The months of the year that have 31 days are January, March, May, July, August, October and December.
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  • What does the spring season mean?

    Q: What does the spring season mean?

    A: The spring season often brings warmer temperatures and new growth, and is celebrated by people around the world with festivals and fairs. Spring is the period of time between the vernal equinox, which falls around March 21 each year, and the summer solstice, which takes place every year on June 21. As the spring season progresses, days and nights become milder, flowers and plants bloom, and days become longer.
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  • When is summer in Mexico?

    Q: When is summer in Mexico?

    A: Mexico shares the same summer as the United States, which includes the months of June, July and August. However, Mexico is close enough to the equator that temperatures remain fairly constant throughout the entire year, especially in the southern portions of the country.
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  • Why is February the shortest month of the year?

    Q: Why is February the shortest month of the year?

    A: February is the shortest month because it is used to realign the calendar with the solar year by adding days during leap years. The reason February was chosen for this purpose goes back to the Romans, who did not originally have months for the winter season.
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  • What months make up the first quarter?

    Q: What months make up the first quarter?

    A: January, February and March are the months that make up the first quarter if an organization's fiscal year starts at the beginning of January. Different organizations may start their fiscal years at different times, though, and the first three months of that time period would make up the first quarter. In the business and government sectors in the United States, a year is divided up into four pieces, each of which is called a quarter. This is done so that analysts, accountants, independent contractors, investors, tax regulators and other interested parties can easily track growth, profits, goals and set due dates for certain regulatory items.
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  • How long is winter?

    Q: How long is winter?

    A: Winter is approximately 3 months long — at least by the calendar. Officially, winter begins on the winter solstice and ends on the spring equinox.
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  • How do seasons change?

    Q: How do seasons change?

    A: The change in seasons is caused by the varying angle of the Earth's tilt from one part of the year to another. A common misconception is that the change in seasons is due to the Earth's slightly elliptical orbit bringing the planet closer to the sun in summer, but, as About.com notes, seasons are different in the northern hemisphere and the southern, which are the same distance from the sun.
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  • Q: What were the dates for daylight savings in 2014?

    A: In 2014, daylight saving time, or DST, began in the United States on March 9. It ended Nov. 2, 2014. The current schedule for U.S. DST is to set clocks ahead one hour on the second Sunday in March, then set them back on the first Sunday in November.
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  • How many days are in November?

    Q: How many days are in November?

    A: November is the eleventh month of the calendar year and contains 30 days, or four weeks and two days if counting by a measurement of weeks. Important holidays in the United States that occur in the month of November include Veterans' Day (November 11) and Thanksgiving (the fourth Thursday occurring in November).
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  • Q: What colors represent each month?

    A: The colors associated with different months are based on birthstones. The birthstones for January through April are garnet, amethyst, aquamarine and diamond, respectively. The birthstones for May through August are emerald, pearl, ruby and peridot. The birthstones for September through December are sapphire, opal, topaz and turquoise.
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  • Q: When does spring start?

    A: Spring starts when the vernal equinox occurs, which is usually on or around March 21. An equinox is a date when night and day are exactly the same length. Two occur during the year, one signaling the beginning of spring and the second signaling the beginning of autumn.
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  • Q: What are some facts about the month of March?

    A: As of 2015, March is the third month of the year, but it wasn't always so. March was the first month of the 10-month year in the Roman calendar because it was close to spring. Even now, the vernal equinox falls between March 19 and the 21st.
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  • Q: What is the latitude of the direct rays of the sun on June 21?

    A: The latitude that receives the sun’s rays directly overhead on June 21st is 23.5 degrees north. This latitude is also known as the Tropic of Cancer.
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  • Q: What are some examples of winter slogans?

    A: One of the famous winter slogans is "Hot.Wintry.Yours". It was chosen by the Organizing Committee of the 2014 Winter Olympics in Sochi, Russia.
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