Add two hours, every day of the year
Pacific to Central is a straightforward addition of two hours. Because the two zones observe daylight saving on identical dates, that offset never changes, in any month.
What it means for a West Coast working day
Starting at 9:00 AM in Los Angeles puts you at 11:00 AM in Dallas, Chicago or Houston, so you still catch most of their day. The pinch comes late: a 4:00 PM Pacific meeting is 6:00 PM Central, which is asking people to stay past the end of their day. Anything you want a Central colleague to attend is best placed before 3:00 PM Pacific.
Texas, Chicago and the rest of the middle
Central is the largest US zone by population after Eastern, taking in Houston, Dallas, San Antonio, Austin, Chicago, Nashville, New Orleans, Minneapolis and Kansas City. From the West Coast, that is a large share of the country's customers and suppliers sitting exactly two hours ahead. Note that El Paso, despite being in Texas, runs on Mountain time.
Overnight and early-morning conversions
From 10:00 PM Pacific onwards you are already on the following date in Central. Scheduled jobs, log timestamps and cut-off times are where this bites; a report due “end of day Central” expires at 10:00 PM your time.