Friday 17 September Cancelled

Travelling from Samoa to Tonga we crossed the dateline and went from Thursday to Saturday. Friday 17th September didn't happen for us this this. Local time changeed from 11 hours behind GMT to 13 hours ahead of GMT. However, our longitiude is 173W. We won't cross into the eastern hemisphere until we leave Tonga for NZ. The reason is that the date line kinks to allow Tonga to be in the same time zone as Fiji and NZ.