In most places around the world, Major Cold begins when the sun reaches the celestial longitude of 300 degrees and ends when it reaches the longitude of 315 degrees. It is often the time when the earth is frozen to its deepest level. This year, Major Cold began on Jan. 20 and will end on Feb. 2.
This time is critical for agriculture, forestry, fisheries, and animal husbandry. In most cases, insects and bacteria will die out almost completely when the temperature drops to its lowest point, and when spring comes, pest problems will be minimal.
