*These dates are accurate for within[1] day of your local time zone.

The year 2005 has 365 days, so it is not a leap year which has 366 days [the date system used is Gregorian for this and elsewhere on the site]. The next two leap years are 2008 and 2012.

* The purpose of the leap year is to reconcile the earth's orbit around the sun.
This way the seasons stay in step with the month's for each given year.

Calendar view date comparer set month dates beside each other to find concurrent weekdays.
Date calculator;two dates find the number calendar days between two dates.
Yearly calendar about yearly calendars with a perpetual calendar that goes through year 2030.

*scheduled or likely to happen