CalMerger/calendar/time based events.json

{
  "id": "time based events",
  "linkGroupName": "time based events",
  "calendars": [
    {
      "prefix": "holidays",
      "override": false,
      "url": "https://www.calendarlabs.com/ical-calendar/ics/65/San_Francisco_Public_Holidays.ics"
    }
  ]
}