In NSW, it’s 7 days notice required for an AGM. It’s 14 days for the first AGM. There is more information here
=> https://www.fairtrading.nsw.gov.au/housing-and-property/strata-and-community-living/strata-schemes/meetings-of-the-owners-corporation
(You can download the page as a pdf)
Basically, “The Secretary must give each person on the strata roll at least 7 days’ advance notice of a meeting, in writing. The notice can be by post, email or fax. If the notice is sent by post, the Secretary must allow an additional 4 working days for postage.”
In my building, the Strata Manager emails the meeting notice out – but owners without email get it by post, and I believe the Manager posts those 4 days earlier than when the email goes out. We only get the bare 7 days, unless one of the snail mail owners talks to the majority who have email.