As today is January 11, 40 weeks and 4 days ago would have been April 2.
From the date the question was asked, 27th of August 2012, 40 weeks before that would be the 21st of November 2011.
1978.
For humans, full gestation typically lasts around 40 weeks, or about 9 months.
The Ascention Day was when Jesus supposedly came back to life and announced himself to the world, and is several weeks after Easter. N-one is sure of the exact year or day, but it is thought to be sometime around the beginning of AD(after Death)/end of BC(before Christ).
Just short of 687 Earth days in one martian year (686.971).
From the date the question was asked, 27th of August 2012, 40 weeks before that would be the 21st of November 2011.
40 weeks is 280 days (40 x 7).
There are 280 days in 40 weeks.
There are 5 weeks and 5 days in 40 days
No 28 days is 4 weeks 40 days is 5 weeks 5 days
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.
About 280 days or 40 weeks
About 280 days. Typical pregnancy is 40 weeks. 40 weeks x 7 days a week would be 280 days.
Human gestation is approximately 40 weeks.
5 weeks and 5 days are in 40 days.
There are 7 days in a week therefore 7 times 40 = 280 days
Five weeks, five days.