Marine insurance: duration of cover

The issue in Swashplate Pty Ltd v Liberty Mutual Insurance Co [2020] FCA 15 was that a policy taken out in Australia related to a risk located in the US, with a 15-hour time difference between the two jurisdictions. Did the words “From 19 May 2018 to Date of Arrival” refer to the time in the US (insufficient packing having occurred earlier) or to the time in Australia (when the packing had not yet taken place)?

Swashplate : the facts