Ritual . . .

Can be considered for any relationship or life transition :

Birthday 
Changes of season 
Divorce 
Gratitude
Lunar phases 
Menopause 
New Residence 
Pets 
Retirement 
Saying goodbye to old home, job, relationship, etc.
​Crone
Dying 
Grief
Moving 
Saying hello to new home, job, relationship, etc. 
Welcoming the New/Releasing the Old
​And . . . (as this list is certainly not exclusive nor complete)