Gas giant moon, almost tidally locked.
Our moon travels around our planet and causes the tide as it goes pulling the ocean towards it. A smaller high tide occurs on the far side of the moon.
Your planet is the moon of a gas giant. As it travels around its giant, the giant pulls the ocean towards it in a serious way. Your planet is almost tidally locked, rotating to face the giant in sync with its orbit around it. The same section of planet faces the giant for long periods of time.
Eventually your planet will be tidally locked and the high and low tide areas will be more or less fixed, changing only because of the more distant effects of the star. But it is not quite locked. The planet still rotates very slowly and so the high tide and low tide very gradually move across the latitudes.