There are two calendars for all races across all events:

• https://hth.zeldaspeedruns.com/calendar.ics?delay=false uses the scheduled starting times
• https://hth.zeldaspeedruns.com/calendar.ics?delay=true adjusts for stream delay

By pasting one of these links into your calendar app's “subscribe” feature, you can get automatic updates as races are scheduled:

• In Google Calendar, select Add calendar → From URL
• In Apple Calendar, press ⌥⌘S or select File → New Calendar Subscription
• In Mozilla Thunderbird, select New Calendar → On the Network. Paste the link into the "Location" field and click "Find Calendars", then "Properties". Enable "Read Only" and click "OK", then "Subscribe".