A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: I.C. and sunspot
From: Igor S.
Date: 2019 May 16, 18:12 -0700
Thanks for an idea with the contrails. I live close to airport but never thought about it. I have found the description of the technique you mentioned below on the Navlist from previous years.
What is NavList?
You can also join by posting. Your first on-topic post automatically makes you a member.
Enter the email address associated with your NavList messages. Your posting code will be emailed to you immediately.