you saved the day

you saved the day

You fixed a problem or addressed an issue that would have negatively impacted something else. Thank you so much for picking up the cake on your way to the party—you saved the day!
See also: save
References in periodicals archive ?
'You saved the day because now I sleep well, the music is not loud and those people (found later to be on drugs) now know that they cannot behave in that way,' she said.
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