window of opportunity

Etymology
From, popularized by its use by the United States Government in the 1970s in reference to the Cold War (1945–1991).

Noun

 * 1)  A (usually limited) period of time in which suitable action can achieve success.

Usage notes
The term is often used with forms of the word or  to indicate that an appropriate time for action is available or unavailable.

Translations

 * Chinese:
 * Mandarin: 機會窗口
 * Finnish:, ,
 * French:, ,
 * German:
 * Hebrew: חלון הזדמנויות
 * Indonesian: celah peluang, jendela kesempatan
 * Latin:
 * Macedonian: ша́нса, мо́жност, про́зорец на мо́жности
 * Malay: tetingkap peluang
 * Persian: پنجره فرصت
 * Polish: okno możliwości