(SPRINGFIELD) Winter officially begins tomorrow with the Winter Solstice, the astronomical first day of winter in the Northern Hemisphere. The Winter Solstice is the day with the fewest hours of sunlight in the whole year and it will officially occur at 4:23 tomorrow (Friday) afternoon our time. Coincidentally, December’s full Moon, this month called the Full Cold Moon, will appear tomorrow night, though it will not be at its peak until Saturday during the day. By the way, the next full Moon to actually peak on the Winter Solstice will not be until the year 2094. It’s during the Winter Solstice tomorrow that the Sun’s path has reached its southernmost position. Daylight will now begin to increase slightly each day as we move towards spring and the Summer Solstice on June 21. It’s noted that the astronomical seasons are based on the position of the Earth in relation to the Sun whereas the meteorological seasons are based on temperature cycles.