title: How can i draw a geomagnetic equator in the basemap as shown in the mention diagram using python?
body: <p><a href="https://i.stack.imgur.com/FWnzL.jpg" rel="nofollow noreferrer">Code for Drawing Magnetic Equator in basemap</a>
  As I am a beginner, i was trying to add a magnetic equator in the basemap but i was unable to draw even after trying many times. I googled it but couldn't get any idea. So i linked a picture which will help to understand my requirement.</p>