Best overlap: 8:00 AM to 9:00 AM in Boston is 5:00 PM to 6:00 PM in Karachi.
Your shared working hours run 8:00 AM to 9:00 AM in Boston (5:00 PM to 6:00 PM in Karachi). Because Karachi is 9 hours ahead of Boston, the shared window is only about 1 hour. A fixed slot at 8:00 AM in Boston (5:00 PM in Karachi) saves a lot of back-and-forth. Watch the DST gap — when Boston changes its clocks and Karachi stays the same, this window slides by an hour.
| Local time | 12am | 1am | 2am | 3am | 4am | 5am | 6am | 7am | 8am | 9am | 10am | 11am | 12pm | 1pm | 2pm | 3pm | 4pm | 5pm | 6pm | 7pm | 8pm | 9pm | 10pm | 11pm |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Boston America/New York | ||||||||||||||||||||||||
Karachi Asia/Karachi |
Long-distance relationships, parents working overseas, grandkids in Auckland and grandparents in London. The work guides do not really apply. Here is a practical playbook for keeping family relationships strong across time zones. -