How do i know when it will be high tide or low tide, using math formula?

Question

what is the math formula to calculate the sea level, in term of when it will be high tider or low tide, it will be useful for fishing purpose.

I would prefer a simple formula to it

Answer 1

http://tidesandcurrents.noaa.gov/publications/techrpt21.pdf

Answer 2

The centrifugal rigidity of the orbit is making an attempt to drag the Earth and Moon remote from one yet another; the gravitational charm is retaining them at the same time (even with the truth that very, very slowly, they're pulling aside). This charm pulls both thoughts - imagine of an Olympic hammer thrower who spins the load on a cable and has to lean backwards as she/he spins to withstand the rigidity. Now neither the Earth or the Moon are rigid - in truth on the vast scale of a planet, they're quite "wobbly", like jelly. This pulling rigidity for that reason stretches them alongside the line of the pull - like a balloon finished of water may in case you swung it on a string. even with the undeniable fact that, because the Earth is rotating, the line of this "stretch" adjustments by the day, so as we bypass throught the bulge we adventure a tide. because the bulge is in both instructions, we get a tide at the same time as the Moon is on our fringe of the Earth, and about 12.5 hours later at the same time as it truly is on the alternative area. Tides are maximum glaring with water, because water is fluid and may bypass, yet tides influence the land too; we really upward push and fall countless hundred millimetres relative to the centre of the earth with each and each and every tide cycle, yet because each and every thing round us does too, we received't see it. The Moon doesn't rotate relative to the Earth (we continually see an identical area), so the Moon's bulge is continually interior an identical position, in the route of and remote from us. If there have been oceans on the Moon, there is no tides, or particularly, "severe tide" may continually be interior an identical position.