Leap year starting on Monday
A leap year starting on Monday is any year with 366 days (i.e. it includes 29 February) that begins on Monday, 1 January, and ends on Tuesday, 31 December. Its dominical letters hence are GF, such as the years 1912, 1940, 1968, 1996, 2024, 2052, 2080, and 2120 in the Gregorian calendar or, likewise, 2008, 2036, and 2064 in the obsolete Julian calendar. 
Any leap year that starts on Monday, Wednesday or Thursday has two Friday the 13ths. This leap year contains two Friday the 13ths in September and December. Common years starting on Tuesday share this characteristic.
July 2
This day is the midpoint of a common year because there are 182 days before and 182 days after it in common years, and 183 before and 182 after in leap years. The exact time of the middle of the year is at noon. In countries that use summer time the actual exact time of the midpoint in a common year is at 1:00 p.m, or 11:00 a.m for countries in the southern hemisphere; this is when 182 days and 12 hours have elapsed and there are 182 days and 12 hours remaining. In a leap year in those countries, the midpoint occurs at 1:00 a.m. on July 2, or 11:00pm on July 1 in the southern hemisphere. This is due to summer time having advanced the time by one hour. It falls on the same day of the week as New Year's Day in common years.