Manual Syncing calendar

I have not found a good calendar sync, but this is how I manage my calendar to my logins. I do copy incase one is inaccessible or locked out I can always go to a Backup.  I do this on a semimonthly basis, this way I don't  lose birthdays or PTO.


mac calendar export  (file->export)
outlook import(add calendar-> from file) , export ***must use the share  (CAN DISABLE WHEN DONE TO MAKE IT PRIVATE AGAIN)  eg to gmail -import (then use gmail to export)

gmail  import (settings>calendar> import)-> gmail export( settings calendar >export)->

yahoo import(select  my calendar ->import)   , yahoo export (my calendar->export) ->

mac calendar import (file->import)