For the love of The Pond Gods! What is so special about the 9th of June?

Ordered something from eBay. Delivery: 9th June
Ordered something from Amazon. Delivery: 9th June
Ordered something from Argos. Delivery: 9th June
Ordered something from Dunhelm. Delivery: 9th June

Had to just ask my boss if I can WFH that day or the wife will go mental with the constant doorbell ringing!