Add Christchurch (New Zealand) to your list and use my-locations table to visually convert it's time to another timezone or city time.
Mouse over the colored hour-tiles and glance at the hours selected by the column.

Current time zone for Christchurch (New Zealand) is NZDT, whose offset is GMT+13 from Greenwich Mean Time (GMT).

The IANA timezone identifier for Christchurch, New Zealand is "Pacific/Auckland"

DST started on Sunday, September 29 2024 at 2:00 am local time, when time in Christchurch moved forward 1 hour to 3:00 am.
DST ends on Sunday, April 6 2025 at 3:00 am local time, when time in Christchurch moves back 1 hour to 2:00 am.