It was on a Sunday in 1905, 1911, 1922, 1928, 1933, 1939, 1950, 1956, 1961, 1967, 1978, 1984, 1989, 1995, 2006, 2012 and 2017.
After 1900, the following years had a Sunday the 29th of January: 1905 1911 1922 1928 1933 1939 1950 1956 1961 1967 1978 1984 1989 1995 2006 2012
January 28th, 1900 was a Sunday.
January 7th, 1900 was a Sunday.
January 14th, 1900 was a Sunday.
January 21st, 1900 was a Sunday.
Sunday
Sunday
Sunday
Sunday
Since 1900:19041910192119271932193819491955196019661977198319881994Since 2000:20052011201620222033203920442050206120672072207820892095Years which are bold and italicised are years which are yet to happen.
In order for Excel to do calculations on dates it stores them as numbers. The numbers are as counted from the 1st of January 1900. That means that the 1st of January 1900 is 1, 2nd of January 1900 is 2 and so on. If you type any date into Excel and then format it as a number, it will be the amount of days since the beginning of 1900.
There have been 27 leap years between 1900 and 2010. The next one is 2012.