The 4 Ceremonies You Always hear about

- Daily Stand Up

- Sprint Review

- Sprint Planning

- Sprint Retrospective

Are reinforced by 2 Additional Ceremonies

- Backlog Refinement (Taking Raw stories and doing the prework and research to get them ready for your planning ceremony)

- Scrum of Scrum (Cross Team Coordination of Shared Services)

Seeing these as ceremonies will help insure you do them on a regular cadence and on a consistent basis.