Answers revealed in comments section.
GAME 1
A U.S. president (sitting or former) passed away in eight of the ten decades of the 20th century.
Name the two decades during which a U.S. president did NOT pass away.
Name the two decades during which a U.S. president did NOT pass away.
GAME 2
What term for a certain seasonal prevailing wind is derived from Arabic meaning “time of year” or “season”?
hebspeaks 
Game One answers:
1950s
1980s
Game Two answer:
Monsoon