An anniversary marks time that has been shared, so tradition reads it as taking stock of a bond — how far it has come and what it still asks of you. A forgotten one is read as a fear of being taken for granted.
When this appeared in your dream, what were you feeling?
My Cosmic Code has a private dream journal. Write a dream down and the app picks out the symbols in it, shows what dream books say about them and, over time, which words recur across your entries. The journal is stored on your device only.