Call time 1st November (DST changes)

European DST ends this weekend; North America the weekend after.

That means, since the call is based on Boston time, that next week, 1  
November, for one week only, the call time will be ONE HOUR EARLIER in  
Europe:

    https://www.timeanddate.com/worldclock/fixedtime.html?msg=XForms+Call&iso=20171101T0900&p1=43&ah=1

Steven