SDN Members don't see this ad. (About Ads) I believe that the HHMI- Cloister's program interviews in early March according to their website. I also believe that the DDCF programs that require interviews do those sometime in early March. This might not even be an issue if you don't make the first cut. If you do make the first cut and go on to be interviewed, then you might have something to worry about since these programs also have deadlines to meet. Depending when in early March they interview, you might miss the interview and would basically be coming back right when the notifications were sent out. Can you cancel the trip if you were notified you had an interview?