What tidal fishing is better?

The best fishing time is from high tide to seven tides or from low tide to seven tides.

Tides are waves of sea water. Generally speaking, tides are called tides. The fluctuation of sea water during the day is called tide, and the fluctuation of sea water at night is called tide.

Sea fishing is different from fresh water fishing, which is closely related to tides besides being affected by temperature, air pressure and wind direction. As the saying goes, "catch fish at high tide and low tide, and sleep at low tide." This shows the importance of tides to sea fishing. Tides rise and fall to make the sea water flow; At high tide, seawater comes to the shore, driving algae, plankton, planktonic fish eggs, fish and shrimp larvae in the water, and at the same time, seawater washes the shore, increasing the bait in the water. Therefore, the food chain of marine life is formed, and fish actively feed. Fishing bites people frequently at this time. The fishing effect is slightly worse at low tide than at high tide. Fish hardly eat at high tide and low tide. Therefore, it is best to choose high tide or low tide for sea fishing. The best fishing time is to catch the "March 7" tide, that is, the high tide to the seventh tide or the low tide to the seventh tide.

Mastering the law of tides is a compulsory course for sea fishermen. Only by mastering the tides can we control sea fishing. The ancients said: "The tide comes late, comes and goes on time, the moon is in the northeast, and the tide knows." Tidal phenomena are mainly caused by the attraction of the moon and the sun to the earth, that is, the tidal force. Because the moon is closest to the earth, it plays a leading role in the gravity of the earth. The earth keeps spinning. The earth rotates on the moon for 24 hours and 50 minutes. In most parts of the earth except the poles, there is always one time facing the moon and one time facing away from the moon. Where the earth faces the moon, the moon's gravity is the greatest, which makes the sea water reach its climax. Where the earth is opposite to the moon, the centrifugal force of the earth is the largest, which also makes the sea water climax. That is to say, within 24 hours and 50 minutes, the sea water forms two high tides and two low tides, which is commonly called semidiurnal tide (semidiurnal tide in most parts of China).

Although the gravity of the sun is smaller than that of the moon, their positions relative to the earth are changing all the time, and there will be complex tidal phenomena. Two big tides and two small tides every month are caused by the superposition or weakening of the earth's gravity. On the first and sixteenth day of the lunar calendar every month, the earth, the moon and the sun are on the same straight line, and the gravity of the moon and the sun is superimposed on the earth, which makes the sea water rise and fall, forming a spring tide. On the 7th, 8th, 22nd and 23rd of each month, the gravitational forces of the moon and the sun are just opposite, and the tidal force decreases, so that the sea water fluctuates little and a small tide appears. However, due to the influence of various resistances when seawater flows, the appearance of large and small tides will be delayed by about two days. That is, there is a spring tide on the second, third, seventeenth and eighteenth day of each month; On the ninth day, the tenth day, the twenty-fourth day and the twenty-fifth day, a small tide appeared.

Anglers should know when the local waters are in high tide and low tide every day, and when they are in high tide and low tide, otherwise they need to check the local tide schedule. People have summed up various methods for calculating tidal time in the long-term practice of marine activities, among which the "eight-point tidal method" is used in the sea area with obvious semidiurnal tide. Now, a brief introduction for your reference:

The climax time in the first half of the month = (lunar date-1)×0.8+ average climax coefficient.

High tide time in the second half of the month = (lunar date-16)×0.8+ average high tide coefficient.