Do not just click on the link – the calendar will not update with future dates as they are added if you do.
Instead open the calendar page in Outlook, go to the Home menu, click Add Calendar and select the “From Internet” option as shown below.
Then paste this in the calendar URL box and click Ok:
If this calendar account is already on your phone, the nursery calendar should now appear on it it after a short delay. If not, click on iPhone instructions
Android – you will need to add this calendar to a Gmail account on a computer first, before it will appear on an Android phone.