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.
The Egyptians were the first people to think of adding a leap day to the calendar every four years. Later, the Romans copied the idea. In 1582 Pope Gregory XIII reformed the Julian calendar (introduced by Julius Caesar in 45 BCE). By Pope Gregoryâs time the calendar had drifted 14 days off track.