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.
Question: What Is Earth Day? Answer: Earth Day is the day designated for fostering appreciation of the earth's environment and awareness of the issues that threaten it. Actually, Earth Day is one of two days, depending on when you choose to observe it. Some people celebrate Earth Day on the first day of Spring, which is the vernal equinox that occurs on or around March 21st.