There is no information set in stone like a calendar for draws and cut-off dates. But when a draw happens, IRCC will give some information (like min. CRS score, number of invites, etc) including the date when they took a snap-shot picture of candidates in the pool to give ITAs to. It’s usually a 2-3 days before a round of invitation, but it depends. It can sometimes be a week before or just the day before (have a look at the previous rounds of invitations to get a more precise idea of the cut-off dates).
Thanks for the clarification! I did end up receiving my ITA
