Convert 1:30pm BST, to New Zealand time

on google, i searched for a time converter website, but it has country names, not BST. BST stands for British summer time, i think. please help, i want to know so i can tell when pottermore will start. thx

Auckland, New Zealand longitude 174 degree 45 min East
BST longitude 0 degree.
Difference in time= 175/15 = 11 1/2 hours
Answer : New Zealand is 1.00 am the following morning (Ahead in time)