How to Populate Teams Holiday Dates with PowerShell

Teams holiday data define when users of the Teams phone system might not be at work and alternative calling arrangements exist. It’s easy to update holiday data using the Teams admin center, but it’s also easy to write a PowerShell script to update Teams about new holiday events on an ongoing basis. All explained here!

https://office365itpros.com/2022/12/21/teams-holiday-data-powershell/