For some, August 31st simply marks the unofficial end of summer, a time when we can all start looking forward to chillier autumn afternoons and pumpkin spice everything. But for Charles Spencer, Princess Diana’s younger brother, it will forever be remembered the day his beloved sister passed away in a tragic car accident. As he so often does, Spencer chose to acknowledge the day with a solemn yet sweet Instagram post.

Princess Diana's Brother Posts 1960s Pic of Their Parents—and Everyone Is Saying the Same Thing About Them