Daniel Roth, Perpetual Calendar Time Equation collection

Perpetual Calendar Time Equation Ref. 121.Y.70.168.CN.BD More details... Make a request	Perpetual Calendar Time Equation Ref. 121.Y.70.722.CM.BD More details... Make a request
Perpetual Calendar Time Equation Ref. 121.Y.70.722.CM.BD.S02 More details... Make a request	Perpetual Calendar Time Equation Ref. 121.Y.60.721.CN.BD More details... Make a request
Perpetual Calendar Time Equation Ref. 121.Y.60.721.CN.BD.S02 More details... Make a request	Perpetual Calendar Time Equation Ref. 121.Y.40.720.CB.BD More details... Make a request
Perpetual Calendar Time Equation Ref. 121.Y.40.720.CB.BD.S02 More details... Make a request