For this week only, the UK is four, rather than five, hours ahead of Eastern time, and seven, rather than eight, hours ahead of Pacific time.  This may impact your call schedules etc.  The US reverts to Standard time (puts the clocks back an hour) on Sunday, November 3rd.

In 2007, the United States changed its DST observance. The Energy Policy Act of 2005 mandated that DST would start on the second Sunday in March and end on the first Sunday in November. Previously, the dates were the first Sunday in April and the last Sunday in October.