Big big thanks for posting this.
We only remember our wedding anniversary as it falls on the 'Talk' day and we have both just giggled as it's 8:30 in the evening and this is the first time we noticed...
Before you ask, it's not due to 2020, we are normally like this! And as for how many years - we would have to dig the paperwork up or hunt in the roof for the tapestry with the date on it...