Tuesday, according to my Casio watch. (correct) Here's a great formula:
January 31, 1995 was on a Tuesday! See Chart below:
(years in BOLD indicate Leap Years)
January 31, 1993 was on a Sunday
January 31, 1994 was on a Monday
January 31, 1995 was on a Tuesday
January 31, 1996 was on a Wednesday
January 31, 1997 was on a Friday
January 31, 1998 was on a Saturday
January 31, 1999 was on a Sunday
January 31, 2000 was on a Monday
January 31, 2001 was on a Wednesday
January 31, 2002 was on a Thursday
January 31, 2003 was on a Friday
January 31, 2004 was on a Saturday
January 31, 2005 was on a Monday
January 31, 2006 was on a Tuesday
January 31, 2007 was on a Wednesday
January 31, 2008 was on a Thursday
January 31, 2009 was on a Saturday
January 31, 2010 was on a Sunday
If you notice the days are usually sequential.
In 1993 it fell on Sunday, in 1994 it fell on a Monday, the following year 1995 it fell on Tuesday, again the next year 1996 it fell on a Wednesday, (see the pattern) Sunday, Monday, Tuesday, Wednesday? This occurs until 1997 when it skips Thursday and the 31st falls on a Friday, why? because 1996 was a leap year and therefore one day was added to the year, (Feb 29) pushing the 31st of January up one day in the following year 1997 when it falls on Friday (not Thursday)
The same thing happens from 1997 - 2000 the days of January 31st are Friday, Saturday, Sunday, Monday, Since the Year 2000 was a Leap Year again, the following year 2001, we skip Tuesday and the 31st falls on Wednesday.
You can continue this pattern up until well infinity if you choose to do so, just remember skipping a day for the year that follows a Leap Year.
Let's continue up until 2012 (our next leap year)
January 31, 2011 will be on a Monday
January 31, 2012 will be on a Tuesday
January 31, 2013 will fall on a Thursday (skipping Wednesday)
There will always be FOUR sequential days beginning the year AFTER LEAP YEAR and Ending with a Leap Year. Here's another quick show of that beginning with January 31 2009, year after leap year of 2008. These are the days January 31st will fall on or did fall on.
2009 Sunday
2010 Monday
2011 Tuesday
2012 Wednesday
2013 Friday
2014 Saturday
2015 Sunday
2016 Monday
2017 Wednesday
2018 Thursday
2019 Friday
2020 Saturday
March 31st 1995 was a Friday.
Friday
January 31st, 2007 fell on a Wednesday.
January 31st, 1900 was a Thursday.
January 31st, 1971 fell on a Sunday.
January 31st, 2009 fell on a Saturday.
January 31st, 1972 fell on a Monday.
31st of January 1978 fell on a Tuesday.
March 31st 1995 was a Friday.
It is January 31st, the southern hemisphere. The hottest day of the year is July 31st.
Sunday.
It was a Saturday.