Last year it was the fourteenth (Northeastern Early Action / Early Decision for Fall 2024 Admission - #1075 by itllallworkout). EA was february 1, so one day short of a 2 week turnaround from ea to ed2.
2023 was Feb 1 for EA and Feb 15 for ed2, 2 week turnaround.
I’m hoping Jan 29 + 2 weeks = Feb 12, because I don’t think the ed2 pool has grown too much to take longer, and the EA this year was actually earlier than last year.