IST to PST Converter: India to Pacific Standard Time Tool

Indian Standard Time (IST) is UTC+5:30 and never changes — India does not observe daylight saving time. Pacific Standard Time (PST) is UTC-8, the winter designation for the Pacific Time zone covering California, Oregon, Washington, and British Columbia. During US daylight saving time (mid-March to early November), the Pacific zone advances to PDT at UTC-7. This means the raw gap between IST and Pacific Time is 13 hours 30 minutes during PST and 12 hours 30 minutes during PDT. The converter selects the correct offset based on the date you provide.

Converting IST to PST requires subtracting 13.5 hours (or 12.5 during PDT) from the source time, a calculation that almost always crosses midnight and often shifts the calendar date backward by one full day. A time in the morning in India typically corresponds to the previous evening in California. This date-crossing behavior is the primary source of scheduling confusion between these two regions and is the main reason a reliable converter is valuable.

India and the US West Coast share one of the world's most active technology corridors, with Silicon Valley companies running engineering operations out of Bengaluru, Hyderabad, and Pune. Coordinating release cycles, incident response, and product reviews across this 12.5–13.5 hour gap requires teams to identify the narrow overlap window — India's late evening corresponds to California's early morning, giving teams roughly two usable hours. Accurate IST-to-PST conversion also matters for gaming communities following live Twitch streams or eSports events hosted in the Pacific zone, and for academics tracking Pacific-time conference sessions or paper submission deadlines.