Wall Street - How it works, and for Whom

Blog Search - a resource

For traders in global firms, the trading day begins in T okyo; they “pass the book” at about 4 or 5 in the
afternoon Tokyo time to London, where it is 7 or 8 in the mor ning, and pass it westwards at 1 PM to New York, where it is 8 in the morning. The trading day ends when New York closes.

Other than the strange formatting, this book is a good read so far. Grab it from the link on Bill Cara's web site.