Misc: What does a horologist measure?

Questions

In 1894 6,000 Armenians massacred by Turks in---------- . ?

In 1933 Roosevelt establishes diplomatic relations with the ---------- Union. ?

In 1950 The United Nations gets approval from the U.S. government for issuing ---------- stamps. ?

In 1982 Fifth Space Shuttle Mission - ---------- 5 returns to Earth. ?

In 1984 Fourteenth Space Shuttle Mission - ---------- 2 returns to Earth. ?