From February 1 to March 27, 29-1(days in February)+27 (days in March) equals 55 days.

55÷7 (how many weeks are there in * * * these days) =7 (weeks) ... 6 (days) The remaining six days add up to one day of the week.

2+6=8 (days) Sunday is Monday.

February 1 is Monday.