It is randomized and and such, will be randomly selected. It is independent on the date of your submission (vs. deadline) and therefore, independently from the confirmation number.
CBC news said that the invitation process would be happening in the next 10 days
source here:
https://www.cbc.ca/news/politics/lottery-immigration-parents-grandparents-sponsor-1.5860855
I guess the time emails are being sent would be in "office hours", based on EST..
So, just keep checking your email inbox, spam folder, etc... and following the IRCC on the social network