Determining moonset time from Nautical Almanac
It means that there is a moonset at that time on the third of February. 

At the equator, it is certain that the moon that set at 0041, rose the previous day (Feb 2nd), at about midday.  (the moonset is about 50 minutes later each day, which means that there can be days with no moonset, but you can't have a day with two moonsets)

On days with no moonset the time of moonset in your almanac might be indicated with a time that is more than 23:59

For example:

Date of month
1    2    3    4
h m  h m  h m  h m 
2052|2250|2500|0100


Here you see on the first day of the month the moon sets at 20:52, on the second it sets at 22:50, on the third day there is no moonset. The moon sets one hour after midnight. The moonset 25:00 and 01:00 refer to the same event.