----- Original Message ----- From: "Harold Hallikainen" <harold at hallikainen.com> To: "Broadcasters' Mailing List" <broadcast at radiolists.net> Sent: Thursday, December 21, 2006 10:22 AM Subject: Re: [BC] Solstice Today > > By the way, day length seems sinusoidal. exactly greatest rate-of-change is at equinoxes