Theory of tides Long period Long period

| Higher_harmonics | Darwin | Period | Speed | Doodson_coefficients | NOAA |
|---|---|---|---|---|---|
| Larger lunar elliptic diurnal | Q 1 | 26.868350 | 13.3986609 | 1 | 26 |
| Larger elliptic diurnal | 2Q 1 | 28.00621204 | 12.8542862 | 1 | 29 |
| Solar diurnal | P 1 | 24.06588766 | 14.9589314 | 1 | 30 |
| Long period | Darwin | Period | Speed | Doodson coefficients | NOAA |
| Lunar monthly | M m | 661.3111655 | 0.5443747 | 0 | 20 |
| Solar semiannual | S sa | 4383.076325 | 0.0821373 | 0 | 21 |
| Solar annual | S a | 8766.15265 | 0.0410686 | 0 | 22 |
| Lunisolar synodic fortnightly | M sf | 354.3670666 | 1.0158958 | 0 | 23 |
| Lunisolar fortnightly | M f | 327.8599387 | 1.0980331 | 0 | 24 |