1. Semidiurnal Harbor Tide Estimation
Coastal HikerBackground
A hiker wants to explore tide pools at a local harbor but only knows the morning high tide time from a local notice board.
Problem
Needs to estimate the tide height at 13:00 to ensure safe access to the tide pools.
How to use
Enter the reference high tide as '2026-06-30 06:15', set the target time to '13:00', select 'semidiurnal' cycle, and input the mean high water of 2.6m and low water of 0.4m.
Outcome
The tool generates an HTML summary showing the estimated tide height approaching low water, helping the hiker time their visit safely.