Subscribe once on your phone, Google or Outlook. Each fight shows the UK time and channel, and new fights appear by themselves.
Add it once and it keeps itself up to date. New fights appear in your calendar as we add them, and changes to dates and times come through automatically. Each fight has the UK ring-walk time, the channel and a link to the full card.
Small hall shows are BBBofC-sanctioned cards around the UK that aren't on TV. Add both calendars if you want everything.
iPhone or Mac: tap the button, then Subscribe. The fights appear as their own calendar, which you can switch off any time in the Calendar app.
Google Calendar: the button opens Google Calendar with the feed ready to add. On a phone, add it on a computer first and it will sync to the Google Calendar app.
Outlook: the button opens Outlook on the web with the feed ready to add.
Anything else: copy the link and use your calendar's "subscribe" or "add from URL" option.
Times are UK time and can change, especially for overnight US cards. Check the fixtures page on fight night.