launch window

noun
a precise time period during which a spacecraft can be launched from a particular site in order to achieve a desired mission, as a rendezvous with another spacecraft.
Also called window.


Origin:
1960–65

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World English Dictionary
launch window
 
n
the limited period during which a spacecraft can be launched on a particular mission

Collins English Dictionary - Complete & Unabridged 10th Edition
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Example sentences
Second, rather than having to wait ages on the ground for the right launch window, an air-launcher can fly to a better location.
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