Does our body remember anniversaries through dreams?

So without getting into details, last night I had a dream about something that happened 4 years ago. I rarely think about the event, and I didn’t remember the specific date or anything and woke up and brushed it off. My phone gave me a notification from my photos and it was actually 4 years ago today. I know that we can subconsciously remember anniversaries due to weather changing and other environmental factors, but this felt crazy, especially considering this event wasn’t something that dominated my mind and haven’t dreamed about a lot since it happened. Has anyone else experienced something like this?