An ill patient before Alos Hashachar or the beginning of the day contacted the Toronto Kolel and being very distressed wanted to know since he couldn’t (or forgot) to put on Tefilin on the day before, if there is something he could still do.

Some Poskim maintain that one can don Tefilin even during the night, as when one gets up early before he travels and won’t go to sleep anymore. See Igrois Moishe( O.H. I: 10) and Teshuvos V’hanhagos I: 49). Therefore, in order to calm down the distressed patient. one may suggest that he dons Tefilin then.