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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.
The earliest source stating 25 December as the date of birth of Jesus is likely a book by Hippolytus of Rome, written in the early 3rd century. [128] He based his view on the assumption that the conception of Jesus took place at the Spring equinox which Hippolytus placed on 25 March, and then added nine months to calculate the date of birth ...
For example, if there is a gestational age based on the beginning of the last menstrual period of 9.0 weeks, and a first-trimester obstetric ultrasonography gives an estimated gestational age of 10.0 weeks (with a 2 SD variability of ±8% of the estimate, thereby giving a variability of ±0.8 weeks), the difference of 1.0 weeks between the ...
A pregnancy may end in a live birth, a miscarriage, an induced abortion, or a stillbirth. Childbirthtypically occurs around 40 weeks from the start of the last menstrual period(LMP), a span known as the gestational age. [4][5]This is just over nine months. Counting by fertilization age, the length is about 38 weeks.
Traditional East Asian age reckoning covers a group of related methods for reckoning human ages practiced in the East Asian cultural sphere, where age is the number of calendar years in which a person has been alive; it starts at 1 at birth and increases at each New Year. Ages calculated this way are always 1 or 2 years greater than ages that ...
Dating precisely the beginning of the start of the 12,000th year cosmogony rests solely on the date Zoroaster is estimated to have been born. [42] Since Zoroaster was born himself at the end of the 9th millennium (just before the 9,000th year), the date of creation can be calculated by counting back 8,900–9,000 years.
The date of birth of Jesus of Nazareth is not stated in the gospels or in any secular text, but most scholars assume a date of birth between 6 BC and 4 BC. [1] Two main methods have been used to estimate the year of the birth of Jesus: one based on the accounts of his birth in the gospels with reference to King Herod's reign, and another based on subtracting his stated age of "about 30 years ...
Age and female fertility. Female fertility is affected by age and is a major fertility factor for women. A woman's fertility is in generally good quality from the late teens to early thirties, although it declines gradually over time. [1] Around 35, fertility is noted to decline at a more rapid rate. [1] At age 45, a woman starting to try to ...
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