diff --git a/project/templates/blocks/promo.html b/project/templates/blocks/promo.html
index 32a9cde6..b2c644ce 100644
--- a/project/templates/blocks/promo.html
+++ b/project/templates/blocks/promo.html
@@ -52,6 +52,7 @@
       {% if not is_purchased and not is_purchased_future %}
         <a
             data-popup=".js-popup-buy"
+            data-day="{{ school_schedule.weekday }}"
             class="main__btn btn"
             href="#"
         >