2609 weeks.
2 years, 13 weeks and 4 days, which is just over two and a quarter years.
35 weeks.
13 weeks = 13*7 days = 13*7*24 hours = 2184 hours
13 weeks.
13 years, 25 weeks. Call it 13 and 1/2
2609 weeks.
52 weeks in a year 676 divided by 52= 13 years.
2 years, 13 weeks and 4 days, which is just over two and a quarter years.
There are 13 weeks in 91 days.
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.
35 weeks.
Allowing for a leap year every fourth year, 678 weeks (plus 2 or 3 days).
12 months = 1 year = 52 weeks 60 months = 5 years = 260 weeks 3 months = 52 / 4 = 13 weeks 63 months = 260 + 13 = 273 weeks (approximately) (as months are not exactly 4 weeks)
I think it took 13 YEARS from the date of Declaration of Independence to the ratification of the Constitution by the 13 colonies.
Marine Corps Boot Camp lasts for 13 weeks.
13 weeks = 13*7 days = 13*7*24 hours = 2184 hours