Not exactly: Zulu time is Greenwich Mean Time, which is the base time for setting time zones all around the world. It does not change in spring and fall, as US and European time zones do. So, for example, the difference between East Coast time and Zulu time in the summer is four hours, and in the winter five. Using London as a time zone doesn't work, as London observes daylight savings time and is therefore always five hours off East Coast time.
What I want is a clock display that will show Zulu time next to my local time so that I don't have to do the calculating in my head constantly.
The standard clock widget does not do this.