Anchorage is 22 hours behind Wellington
Best overlap: 8:00 AM to 4:00 PM in Wellington is 10:00 AM to 6:00 PM in Anchorage.
Schedule calls for 8:00 AM to 4:00 PM in Wellington — your colleagues in Anchorage will be online from 10:00 AM to 6:00 PM. With 8 hours of daily overlap, these two cities are an easy pairing; almost any reasonable hour works. This window straddles two dates — Wellington's today is Anchorage's the previous day.