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  2. Gestational age - Wikipedia

    en.wikipedia.org/wiki/Gestational_age

    Gestational age. For actual age of gestation, see Human fertilization § Fertilization age. In obstetrics, gestational age is a measure of the age of a pregnancy taken from the beginning of the woman's last menstrual period (LMP), [1] or the corresponding age of the gestation as estimated by a more accurate method, if available.

  3. Day of Conception - Wikipedia

    en.wikipedia.org/wiki/Day_of_Conception

    September 12. Next time. 12 September 2024. ( 2024-09-12) Frequency. annual. Day of Conception (also known as Procreation Day) is a Russian Holiday made popular by the region of Ulyanovsk, birthplace of Vladimir Lenin. The day itself takes place on September 12, and couples who then have a child on June 12 are rewarded by the regional ...

  4. Feast of the Immaculate Conception - Wikipedia

    en.wikipedia.org/wiki/Feast_of_the_Immaculate...

    The Feast of the Immaculate Conception celebrates the Immaculate Conception of the Blessed Virgin Mary on 8 December, nine months before the feast of the Nativity of Mary on 8 September. It is one of the most important Marian feasts in the liturgical calendar of the Roman Catholic Church . By pontifical decree, it is the patronal feast day of ...

  5. Crown-rump length - Wikipedia

    en.wikipedia.org/wiki/Crown-rump_length

    Crown-rump length. An ultrasound showing an embryo measured to have a crown-rump length of 1.67 cm and estimated to have a gestational age of 8 weeks and 1 day. Crown-rump length ( CRL) is the measurement of the length of human embryos and fetuses from the top of the head (crown) to the bottom of the buttocks (rump).

  6. Annunciation - Wikipedia

    en.wikipedia.org/wiki/Annunciation

    Ephraim the Syrian taught that the date of the conception of Jesus Christ fell on 10 Nisan on the Hebrew calendar, the day in which the passover lamb was selected according to Exodus 12 (Hymn 4 on the Nativity). Some years 10 Nisan falls on 25 March, which is the traditional date for the Feast of the Annunciation and is an official holiday in ...

  7. History of birth control - Wikipedia

    en.wikipedia.org/wiki/History_of_birth_control

    History of birth control. The history of birth control, also known as contraception and fertility control, refers to the methods or devices that have been historically used to prevent pregnancy. [1] Planning and provision of birth control is called family planning. [2] In some times and cultures, abortion had none of the stigma which it has ...

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