"Special anniversary" refers to a significant and noteworthy milestone that is celebrated each year to commemorate a memorable event or occasion. Full definition
We have particularly experience in developing and managing staff and customer travel related incentives, management away weekends and special anniversary celebrations. (ambientevents.com)
This year we are urging teachers, pupils and school councils to once again consider participating in our very special anniversary fundraiser. (education-today.co.uk)
Some couples return to the same room every year to commemorate their wedding or other special anniversary. (mauikai.com)