The NZ Herald article about the "Escalation Levels for Fuel Response" apparently announced in Aotearoa today suggests about 50 days supply currently held locally.

Which is better than I had feared, but not as good as I'd hoped (or IEA requirements of "90 days").

www.nzherald.co.nz/nz/politics/fuel-supply-emergency-level-system-how-new-zealands-response-would-change-at-each-stage-when-car-bans-might-happen/premium/5DF5TDTKE5EYFHGWLRBFU2GM3M/