Here is what Geetaji wrote in 2015:
"We are all yoga sādhakās and sādhanā is our very breath, our prāna.
The United Nations has declared 21st June as the International Yoga Day, which will be celebrated all over the world.
For us every day is yoga day. However to respect this special day, to respect Guruji, we have thought of a special practice programme for this day.
Many students from across the world approached me to ask if they could have a special sequence of practice for this day… the (summer) solstice.” – Geeta Iyengar"
So here it is, Geetaji’s special sequence for us all.