Year 2010 has 365 days and is not considered a leap year. The next leap year is 2012 and will have 366 days. The extra day in the year 2012 will fall on February 29th to help offset that the earth does not orbit around the sun in exactly 365 days. So every 4 years an extra day is added by extending February from 28 days to 29 days on the leap year with a few exceptions for years that are divisable by 100.

Year 2010 Holidays shows major holidays for year 2010.(2007 2008 2009)
Today's Date quick facts about today, the current day.
Date Comparisons set year and month dates beside one another to find out
when concurrent weekdays fall.
Date Calculator - use to find the number of calendar days between two dates.
2010 Calendar - with holidays, observances and moon dates for year 2010 and 2011 calendar gives the same.
2010 countdown for countdowns of days remaining for the seasons.