1/3 of a year is 120 days.
120 into fraction = 120/1
fraction of 120 out of 360 = 120/360 or 1/3
The fraction is 37/120. Since the two numbers are coprime, the fraction cannot be simplified.
The fraction is 97/120.
In any given year, the date 120 days after May 15 is September 12.
The 11th of October is 120 days before it. In a normal year, the 8th of June is 120 days after it. In a leap year, the 7th of June is 120 days after it.
The 14th of September is 120 days after the 17th of May. In a standard year, the 17th of January is 120 before it and in a leap year the 18th of January is 120 days before it.
120 into fraction = 120/1
12.0 = 12/1 in fraction
Use 365 days for the number of days in a year
Adding 120 days to February 10 in a non-leap year gives June 10 of the same year. Adding 120 days to February 10 in a leap year gives June 9 of the same year.
Adding 120 days to November 9, heading into a non-leap year gives March 9 of the following year. Heading into a leap year, adding 120 days to this date gives March 8.
A fraction requires two numbers. 21 days as a fraction of what? A month, a year, a century?
Assuming it is a normal year with 365 days, the fraction would be 65/365 = 13/73
Adding 120 days to January 7 in a non-leap year gives May 7 of the same year. Adding 120 days to January 7 in a leap year gives May 6 of the same year.
Straddling a non-leap year, adding 120 days to November 8 gives March 8 of the following year. Straddling a leap year, adding 120 days to November 8 gives March 7 of the following year.
45 days is approximately 1/8 of a year.