Wellington is 11-13 hours ahead of London depending on daylight saving time. Wellington uses New Zealand Standard Time / Daylight Time (NZST/NZDT, UTC+12/+13) while London uses GMT/BST (UTC+0/+1). When it's 12:00 PM in London, it's typically 12:00 AM (midnight) in Wellington.
Both cities observe daylight saving time but on opposite schedules (Southern Hemisphere vs Northern Hemisphere). This creates complex variations in the time difference throughout the year, ranging from 11 to 13 hours.
Best calling time: 9:00 PM - 12:00 AM Wellington time. This corresponds to 9:00 AM - 12:00 PM in London (during NZST/GMT), catching UK morning business hours.
Wellington and London have strong Commonwealth ties. New Zealand was a British colony and maintains close cultural, political, and business connections with the UK. Despite the large time difference, many New Zealand businesses have UK partnerships that require evening calls from New Zealand.