I expect your family are not disregarding, but feeling that, you may not want to commemorate the day because your DH is not with you.
Many people, even close family, can be embarrassed and unsure about bereavement and anniversaries and blank them rather than address the issue. It is probably love and oversensitivity that means nothing has been done or said.
But you have come on GN and we will celebrate with you. Do you have a weddding picture to post here? I was pregnant with my DS in June 1971. I seem to remember it was a sunny warm summer, so you must have had lovely weather for the event.