Six methods of throttle matching

1, tidal method: the tidal method is multiplied by the daily sun height, and the throttle of that day is analyzed in combination with air pressure and temperature and humidity. 2. Ephemeris: According to the trajectory of the moon and the sun, according to the first and last appearance of solar terms, analyze the solar terms of the day.

3. Astronomical method: According to the daily sunset, compare the size and position of the moon and calculate the solar terms of the day.

4. Qi Zhuang method: According to the change of temperature with time, analyze the solar terms of the day.

5. Regarded method: Calculate the throttle valve of the current year based on the average temperature of more than ten days in that year.

6. Time difference method: calculate the annual throttling time according to a certain solar term time every year.

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