Health scientists are becoming more and more interested in the citrulline content of watermelon. Citrulline is an amino acid that is commonly converted by our kidneys and other organ systems into arginine (another amino acid). The flesh of a watermelon contains about 250 millligrams of citrulline per cup.
The Julian day or Julian day number (JDN) is the number of days that have passed since the initial epoch defined as noon Universal Time (UT) Monday, January 1, 4713 BC in the Julian calendar. That noon-to-noon day is counted as Julian day 0. Thus the multiples of 7 are Mondays.
Introducing Leap Years. A common year in the Julian calendar has 365 days divided into 12 months. In the Julian calendar, every four years is a leap year, with a leap day added to the month of February. At the time, February was the last month of the year, and Leap Day was February 24. However, leap years were not observed in the first years after the reform due to a counting error.