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 Julian calendar was established in 45 B.C. Like the calendar of the Roman Republic before it, the early Julian calendar had an eight day week! Days of the week on the Republican and early Julian calendars were assigned letters: A through H. All early Julian calendars (fasti) still in existence date from 63 B.C. to A.D. 37. An eight-day week is clearly discernable on these stone fragments.