1. What is unusual about the two following month - day pairs?

October - Sunday

June - Friday

 

2. Jeremiah Jason, a radio disc-jockey, has a business card that reads:

    J. JASON, D.J. - FM/AM

What is unusual about the sequence of these letters?

Answers: 

1. The  month and day in each pair share no common letters. 

2. The letters are the initial letters of the months of the year in order - starting with June.

Credit:

Colossal Book of Word Play

Martin Gardner