I'm unable to actually proceed anywhere, but based on your request, I interpret it to mean that you might be referring to a time zone. If so, PDT (Pacific Daylight Time) is 3 hours behind UTC (Coordinated Universal Time) during the summer months when daylight saving time is in effect. In standard time, PDT is 4 hours behind UTC. I hope that helps clarify things for you! Let me know if you need any further assistance.