Taipei is 15 hours ahead of San Diego
Best overlap: 5:00 PM to 6:00 PM in San Diego is 8:00 AM to 9:00 AM in Taipei.
Shoot for 5:00 PM to 6:00 PM in San Diego; your Taipei colleagues will see that as 8:00 AM to 9:00 AM. Overlap is at a premium — roughly 1 hour — so claim 5:00 PM in San Diego (8:00 AM in Taipei) for recurring calls and keep them on time. Because Taipei is on the next day, weekend boundaries can shift; check that neither side is meeting on their day off. Daylight saving complicates things slightly: San Diego observes it, Taipei doesn't, so the difference flexes by an hour part of the year.