Add downloadable ICS calendar for conference imports

README.md

@@ -62,6 +62,32 @@ A good _heuristic_ for whether a conference should be included is if its name in
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+## Calendar Download
+
+The site provides a downloadable calendar file (iCal/ICS format) that can be imported into calendar applications like Google Calendar, Apple Calendar, or Outlook. The calendar is automatically generated from the conference data and is available at:
+
+```
+https://testingconferences.org/calendar.ics
+```
+
+This feature allows users to easily import all upcoming testing conferences into their calendar application.
+
+### Data Format
+
+Conference entries in `_data/current.yml` include `start_date` and `end_date` fields in YYYY-MM-DD format, which are used to generate the calendar. When adding new conferences, please include these fields along with the human-readable `dates` field.
+
+**Important**: The `end_date` should be set to **one day after** the last day of the conference, as per the ICS specification for all-day events.
+
+Example:
+```yaml
+- name: Example Conference 2026
+  location: City, Country
+  dates: "January 22-24, 2026"
+  start_date: "2026-01-22"
+  end_date: "2026-01-25"  # One day after the conference ends
+  url: https://example.com
+```
+
 ## License
 
 TC.org is released under the [MIT License](MIT-LICENSE).