The question was asked on Wednesday the 19th of February 2014. The answer for that date would be Friday the 22nd of November 2013.
Twelve weeks and four days ago. There's seven days in a week, so 12 weeks and four days is 88 days ago. 88 days ago, from today, was 2021-04-12.
The 2nd
Your hunch is right; the ultrasound date is based on the day your last period ended. So, on average, the 40 week pregnancy begins two weeks before conception has even occured.
=there are 84 days in 12 weeks==there are 84 days in 12 weeks==there are 84 days in 12 weeks=
Adding 12 weeks, that is, 84 days, to June 14 in any year gives September 6.
Adding 12 weeks, that is, 84 days, to August 14, 2011, gives November 6, 2011.
December 12
90 days are 12 weeks and 6 days, or one day less than 13 weeks.
Simplify the Ratio 3 weeks : 12 days
12 weeks, and 5 days.
12 weeks & six days.
90 days is 12 weeks and 6 days.