Eight weeks.
Eight weeks and two days
There are 420 days in 60 weeks.
four weeks
56
There are 9 5/7 days in sixty-eight days.
There are eight weeks in 56 days (56/7=8).
336
59.5 Days Old
it is around eight months
Including January and March, it's 13 weeks. In regular years it is 12 weeks and 6 days, and in leap years it is exactly 13 weeks. If referring to the period from the beginning of January to the beginning of March or from the end of January to the end of March (or middle to middle, etc.), it is eight weeks and three days in regular years and eight weeks and four days in leap years.
there are 560 days in 80 weeks