HARMONIC ANALYSIS AND PREDICTION OF TIDES. 



315 



Table 39. — Synodic periods of components. 

 DIURNAL COMPONENTS. 



SEMIDIURNAL COMPONENTS. 



Table 40. — Day of the common year corresponding to day of month. 

 [For leap year increase aU numbers after February 29 by one day.] 



72934— 24t 21 



