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The estimated date of delivery ( EDD ), also known as expected date of confinement, [ 1] and estimated due date or simply due date, is a term describing the estimated delivery date for a pregnant woman. [ 2] Normal pregnancies last between 38 and 42 weeks. [ 3] Children are delivered on their expected due date about 4% of the time.
Age calculation templates. Wikipedia uses several templates that self-update every day to keep date and age information current. These are very useful for a dynamic online encyclopedia and save users from having to regularly update that kind of information. However, when using this kind of template, a few things should be kept in mind.
Fertility awareness ( FA) refers to a set of practices used to determine the fertile and infertile phases of a woman's menstrual cycle. Fertility awareness methods may be used to avoid pregnancy, to achieve pregnancy, or as a way to monitor gynecological health. Methods of identifying infertile days have been known since antiquity, but ...
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t. e. In astrology, sidereal and tropical are terms that refer to two different systems of ecliptic coordinates used to divide the ecliptic into twelve "signs". Each sign is divided into 30 degrees, making a total of 360 degrees. [ 1] The terms sidereal and tropical may also refer to two different definitions of a year, applied in sidereal ...
The Coligny calendar registers a five-year cycle of 62 lunar months, divided into a "bright" and a "dark" fortnight (or half a moon cycle) each. The internal notations show that the months began with the first quarter moon, and a 13th intercalary month was added every two and a half years to align the lunations with the solar year.
The Aztec or Mexica calendar is the calendrical system used by the Aztecs as well as other Pre-Columbian peoples of central Mexico. It is one of the Mesoamerican calendars, sharing the basic structure of calendars from throughout the region. The Aztec sun stone depicts calendrical symbols on its inner ring. The Aztec sun stone, also called the ...
The signs enumerate from the first day of spring, known as the First Point of Aries, which is the vernal equinox. The astrological signs are Aries, Taurus, Gemini, Cancer, Leo, Virgo, Libra, Scorpio, Sagittarius, Capricorn, Aquarius, and Pisces. The Western zodiac originated in Babylonian astrology, and was later influenced by the Hellenistic ...