I see a CSAF meeting on my calendar for tomorrow

Hi CSAF group...,
I see a CSAF meeting on my calendar. I'm adding this to my Google Calendar by clicking on the drop down next to "Other calendars", and importing by URL. I then add this URL:
webcal:// www.oasis-open.org/apps/org/workgroup_feeds/ical/my_vcalendar.ics?token=d94c7e8a660463da2bf7517786e2b5b3&workgroup_id=532
When I do that, I see a meeting scheduled for tomorrow (2017-10-04).
However, when I go to:
https://www.oasis-open.org/apps/org/workgroup/csaf/calendar.php
... it shows the next meeting on 2017-10-25.
Which is correct?
Thanks!  Eric.