© Charles Chandler

 

Semi-diurnal
Sym.	Description	Period	Vert.	Horiz.
M2	principle lunar	12.421 hr	384.83	53.84
S2	principle solar	12.000 hr	179.05	25.05
N2	lunar elliptic	12.658 hr	73.69	10.31
K2	lunisolar	11.967 hr	48.72	6.82
Diurnal
Sym.	Description	Period	Vert.	Horiz.
K1	lunar	23.934 hr	191.78	32.01
O1	lunar	25.819 hr	158.11	22.05
P1	solar	24.066 hr	70.88	10.36
φ1	latitude	23.804 hr	3.44	0.43
ψ1	latitude	23.869 hr	2.72	0.21
S1	solar	24.000 hr	1.65	0.25
Long Term
Sym.	Description	Period	Vert.	Horiz.
Mf	lunisolar fortnightly	13.661 dy	40.36	5.59
Mm	lunar monthly	27.555 dy	21.33	2.96
Ssa	solar semi-annual	0.5000 yr	18.79	2.60
	lunar node cycle	18.613 yr	16.92	2.34
Sa	solar annual	1.0000 yr	2.97	0.41