When is the best time to go to Weifang to catch the sea in July 15?

In July 15, it is best to go to Weifang to catch the sea one hour before and after 00: 15 and 12:42. Because it is best to go to sea within one hour before and after the lowest sea level in Weifang. 00: 15 and 12:42 have the lowest tidal levels, and 06:25 and 17:57 have the highest tidal levels. It is best to go to sea within one hour before and after the lowest tide level.