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  2. Solar term - Wikipedia

    en.wikipedia.org/wiki/Solar_term

    Because the Sun's speed along the ecliptic varies depending on the Earth-Sun distance, the number of days that it takes the Sun to travel between each pair of solar terms varies slightly throughout the year, but it is always between 15 and 16 days. Each solar term is divided into three pentads (候; hòu), so there are 72 pentads in a year ...

  3. Solar calendar - Wikipedia

    en.wikipedia.org/wiki/Solar_calendar

    The Islamic calendar is a purely lunar calendar and has a year, whose start drifts through the seasons and so is not a solar calendar. The Maya Tzolkin calendar, which follows a 260-day cycle, has no year, therefore it is not a solar calendar.

  4. List of solar cycles - Wikipedia

    en.wikipedia.org/wiki/List_of_solar_cycles

    4-1 11-6 Solar cycle 15: 1913 – Jul 2.5 1917 – Aug 176 73 4-1 10-1 Solar cycle 16: 1923 – Aug 9.3 1928 – Apr 130 68 4-8 10-1 Solar cycle 17: 1933 – Sep 5.8 1937 – Apr 199 96 3-7 10-5 Solar cycle 18: 1944 – Feb 12.9 1947 – May 219 109 3-3 10-2 Solar cycle 19: 1954 – Apr 5.1 1958 – Mar 285 129 3-11 10-6 Solar cycle 20: 1964 ...

  5. List of calendars - Wikipedia

    en.wikipedia.org/wiki/List_of_calendars

    Gregorian calendar with 5- and 6-day weeks, used during 1929 to 1940. World Calendar: solar: Gregorian: 1930 — Perpetual calendar with 12 off-week days, preferred and almost adopted by the United Nations in 1950s Pax Calendar: solar: Gregorian: 1930 — Leap week calendar: Pataphysical calendar: solar: Gregorian: 1949 —

  6. Solar New Year - Wikipedia

    en.wikipedia.org/wiki/Solar_New_Year

    Some of the more widely known solar new year celebrations include: Enkutatash (Ethiopian calendar): about ten days before the autumnal equinox; January 1 in the Gregorian and Julian calendars (same number, different days): at present [a] about twelve and twenty-five days respectively after the northern winter solstice.

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    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  8. Vikram Samvat - Wikipedia

    en.wikipedia.org/wiki/Vikram_Samvat

    Vaisakhi marks the beginning of Hindu Solar New Year in Punjab, Northern, Eastern, North-eastern and Central India according to the solar Vikram Samvat calendar. [ 23 ] [ 24 ] and marks the first day of the month of Vaisakha , which is usually celebrated on 13 or 14 April every year and is a historical and religious festival in Hinduism .

  9. Solar cycle (calendar) - Wikipedia

    en.wikipedia.org/wiki/Solar_cycle_(calendar)

    The solar cycle is a 28-year cycle of the Julian calendar, and 400-year cycle of the Gregorian calendar with respect to the week. It occurs because leap years occur every 4 years, typically observed by adding a day to the month of February, making it February 29th. There are 7 possible days to start a leap year, making a 28-year sequence. [1]