Effective in the U.S. in 2007 as a result of the Energy Policy Act of 2005, the local time changes from PST to PDT at 02:00 LST to 03:00 LDT on the second Sunday in March and the time returns at 02:00 LDT to 01:00 LST on the first Sunday in November.

Is it PST or PDT or PT?

"PT" refers not to a time, but to a time zone, and can therefore be used (implicitly and unambiguously) to refer to the current time in the Pacific time zone. If you specify a time (rather than a time zone), you should use the correct one (PDT or PST).

Is New York City in PST?

Pacific Standard Time is 4 hours behind New York.