1.  january 20(n = noun.time) saint agnes's eve - a Christian holy day;
is a kind of christian holy day
is a part of jan, january

2.  january 20(n = noun.time) inauguration day - the day designated for inauguration of the United States President;
is a kind of day
is a part of jan, january

20, atomic number 20, january, january 1, january 19, january 6, k-dur 20