Cornell/Northeastern say the deadline is Nov 1 but I’m not sure which of the above 2 they mean.
check their sites, but usually nov 1 at 11:59. usually their time zone, not yours.
“To meet an application deadline, you must submit your application materials by 11:59 pm on the deadline date posted on your Dashboard. The end of the deadline date is in your local time zone, not the college’s time zone” https://appsupport.commonapp.org/link/portal/33011/33013/Article/35/When-is-the-deadline-for-my-application-submission
Interesting. Some schools use their time zone.