So a little after 0830 AEDT on Wednesday morning, or 0730 AEST in Queensland, I spoke with Trevor Jackson and presented my two theories for what might have happened. One was that some new cell towers were switched on overnight in the 700MHz band, which Optus had recently been given permission to do, and they were set to the wrong time zone. The other was that a security update for the network time protocol (NTP) server had been pushed out, and somehow that was configured incorrectly.
We still don’t know the correct answer.
Also, under the influence of a certain Canadian, I managed to sneak in a mention of the secret code word.
The audio is ©2015 Australian Broadcasting Corporation.