Ann: Significant Gold and Lithium Exploration Planned, page-10

Yeah it's just a guess on their predictions and you can't do much about unexpected events. They did say its 'expected', not 'will' so I'm not going to hold them to it.
I usually give a leeway of +/- 1 week of expected events, but I just like to draw out a best guess timeline, see how well the company sticks to it and if they update the market on boosts or setbacks.
Up to them if they keep us in the dark or not, but that's just a factor I take into account.