Theory of tides Long period Long period

| Higher_harmonics | Darwin | Period | Speed | Doodson_coefficients | NOAA |
|---|---|---|---|---|---|
| Species | Symbol | (hr) | rate(°/hr) | n 1 (L) | order |
| Shallow water overtides of principal lunar | M 4 | 6.210300601 | 57.9682084 | 4 | 5 |
| Shallow water overtides of principal lunar | M 6 | 4.140200401 | 86.9523127 | 6 | 7 |
| Shallow water terdiurnal | MK 3 | 8.177140247 | 44.0251729 | 3 | 8 |
| Shallow water overtides of principal solar | S 4 | 6 | 60 | 4 | 9 |
| Shallow water quarter diurnal | MN 4 | 6.269173724 | 57.4238337 | 4 | 10 |
| Shallow water overtides of principal solar | S 6 | 4 | 90 | 6 | 12 |
| Lunar terdiurnal | M 3 | 8.280400802 | 43.4761563 | 3 | 32 |
| Shallow water terdiurnal | 2MK 3 | 8.38630265 | 42.9271398 | 3 | 34 |