Dallas is 13 hours behind Taipei

There is no standard 8-to-6 overlap. Someone joins early or late.

When Taipei starts work, Dallas is already winding down or offline — the 13-hour gap leaves no shared window. Default to async and only schedule live time when it genuinely needs a conversation — then make it count. Don't be caught out by clock changes — Dallas observes daylight saving and Taipei doesn't, so the offset varies by an hour through the year.