Sep10 4:30am UTC - Sep11 6:30am UTC totals: 190 layoffs.
September totals (except Sep01): 4538 layoffs, and 279 additions.
Methodology and day-by-day breakdown is in comments.
I got confirmation that lay offs are ongoing in Pacific region, but in some countries they have a 2 week delay after the notice, while they still have access to Slack. Thus, there are more layoffs in reality which will catch up in these totals in couple of weeks.