see the light of day

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see the light of day (third-person singular simple present sees the light of day, present participle seeing the light of day, simple past saw the light of day, past participle seen the light of day)

1. (idiomatic) To appear; to be published or disseminated.
   • 1945 November and December, H. C. Casserley, “Random Reflections on British Locomotive Types—1”, in Railway Magazine, page 357:

     True, the "Kings" seem capable amply of performing all that is required of them, but as it is now 18 years since the class first saw the light of day, it is perhaps hardly premature to anticipate a new express design from the G.W.R. within a not too long period.

2. (idiomatic) To be realised.

   Many projects were planned and started, but none saw the light of day.

• see daylight
• see the light