In celebration of the Autumn Equinox or Lá Leathach an Fhómhair as it is called in Gaelic, we are offering a 15% discount on orders of $50 or more until October 10th, excluding shipping. Happy Shopping and Happy Autumn Equinox. The Autumn Equinox was a time of great significance to the ancient Celts. Knowth, Ireland, the largest passage mound known, also contains the greatest and largest collection of Megelithic art in Europe, is aligned to the Autumn Equinox at both sunrise and sunset. Apply coupon code AUTMSALE in your shopping cart to receive your discount.