You can subscribe to a read-only copy of your board's calendar on whichever calendar you use - Apple, Outlook or Google.
Often just clicking on the 'Subscribe' button on the calendar page will import the calendar into your default calendar application, however if that doesn't work or you want to import it into a different application here are some instructions on doing so.
First of all, copy the web address of the calendar subscription. You can do that by pressing the "Copy" button to the right of the "Subscription Link" box.
Now you have a copy of the subscription address (URL) that you can import into whichever application you want. To find a more detailed guide on how to do this, follow the application's own help guides below.
Apple help centre :https://support.apple.com/en-gb/guide/calendar/icl1022/mac
iPad & iPhone
Apple help centre: https://support.apple.com/en-gb/guide/ipad/ipad1b02bf5b/ipados
Microsoft help centre: https://support.microsoft.com/en-us/office/import-or-subscribe-to-a-calendar-in-outlook-com-cff1429c-5af6-41ec-a5b4-74f2c278e98c
Google help centre: https://support.google.com/calendar/answer/37100?hl=en&co=GENIE.Platform=Desktop#zippy=%2Cadd-using-a-link