The Pacific Time Zone includes places like California, Washington, Oregon, Nevada and Idaho in United States, British Columbia, Yukon, Tungsten, and Northwest territories in Canada, and Baja California in Mexico. The largest city in Pacific Time zone is the Los Angeles in California.
2.1 Definition of Research. research: NOUN: 1. a detailed study of a subject, especially in order to discover (new) information or reach a (new) understanding.  Cambridge University Press 2003. The word research is used to describe a number of similar and often overlapping activities involving a search for information. For example, each of the following activities involves such a search; but the differences are significant and worth examining.
Research is work that involves studying something and trying to discover facts about it. You say that someone does, conducts, or carries out research. I had come to India to do some research into Anglo-Indian literature. You can refer to the research that someone is doing as their research or their researches. You normally only use researches after a possessive form such as my, his, or Gordon's. Soon after, Faraday began his researches into electricity.