The Best Tide Detection Time of Qiantang River in 2023

The best time to watch the tide in Qiantang River in 2023 is from August 16th to 18th of the lunar calendar.

Due to the gravity of the moon and the sun, the tide will have an extreme climax. This phenomenon occurs between the first day of the first lunar month and the first day of the first lunar month. August 16th to 18th of the lunar calendar falls within this range, so it is the best time to watch the tide in Qiantang River.

Qiantang River, located at the mouth of the East China Sea, is one of the three major tides in China and one of the most distinctive tides in the world. During this period, influenced by the gravity of the moon and the sun, the Qiantang River has a large tidal range, and the tides rise and fall, forming a spectacular tidal landscape. In addition, August 16 to 18 of the lunar calendar is autumn, with pleasant weather and moderate temperature, which is more suitable for people to watch the tide.

The main factors affecting the tidal time of Qiantang River;

1. Astronomical factors: The time of tidal observation is influenced by the gravity of the moon, and it is usually based on the high tide day and low tide day of the lunar calendar. During the full moon and new moon, the tidal amplitude is large and the tidal observation time is long; In the first and second quarters, the tidal amplitude is small and the tidal observation time is short.

2. Geographical factors: the topography of Qiantang River, the width and depth of the river, etc. Will affect the form and time of tidal observation. For example, where the river is narrow, the tide is usually large and the tidal observation time is long; Where the river is wide, the tide is small and the tide inspection time is short.

3. Meteorological factors: Meteorological conditions such as wind and air pressure will also have a certain impact on the tide-watching time. Strong winds and low pressure tend to prolong the time of tidal observation, while weak winds and high pressure may shorten the time of tidal observation.

4. Earth rotation: The earth rotation period is 24 hours, while the tidal period is about 12 hours and 25 minutes. In this way, the tidal observation time will change with the earth's rotation, and the daily tidal observation time will be slightly different.

Refer to the above content: Baidu Encyclopedia-Watching Tide in Qiantang River