Friday the 4th of June 2010.
The 143rd day in 2010 is the 23 May. 31 days in January 28 days in February 31 days in March 30 days in April 120 leaving 23 days needed in May.
Adding 120 days to August 20, 2010 gives December 18, 2010.
Adding 120 days to May 29, 2010 gives September 26, 2010.
In a non-leap year, the day 120 days before June 17 is February 17. In a leap year, such as 2008, the day 120 days before June 17 is February 18.
100 days after Friday, February 12, 2010 = Sunday, May 23, 2010.
If the period includes a leap year day, February 29, it is 121 days. Otherwise, it is 120 days.
280 days before it was the 8th of February 2010. 280 days after it was the 22nd of August 2011.
Adding 123 days to October 9, 2010 gives February 9, 2011.
It would fall on February 7 2011.
What day is 120 days from October 10, 2013
Depends how many days in the month. 120 / number of days = hours per day eg 30 days in the month: 120 / 30 = 4 hours per day
February 7th 2010 is a Sunday.