Two bits of inauguration math

It’s Martin Luther King Day and also the day of the presidential inauguration. (Which is an… interesting juxtaposition.) How often does this happen? The relevant definitions are: So the two have coincided on Monday, January 20, 1997 (Clinton’s second inauguration) and Monday, January 21, 2013 (Obama’s second). Given the 28-year cycle of the calendar in Continue reading Two bits of inauguration…