Months are one of the best ways for a low-tech/pre-tech culture to keep track of dates (using the Zodiac for something it can actually do—act as a calendar you can see no matter where you are in the world).
Keeping them around is a sensible fail-safe in case some nuclear power sets us back into the dark ages.
This involves some HTML in your Markdown, but isn’t very difficult. You’re just going to add an anchor tag (with an ID but no href) immediately above the heading, like so:
When you’ve got that, you can just use the anchor in a Markdown link: