If you're referring to the user rating of a title on IMDb, please know that the IMDb weighted average for a title does not change upon receipt of each new vote, but instead is updated numerous times per day. For more info, please see our Help page: FAQ for IMDb Ratings
If you're referring to the STARmeter or MOVIEmeter rankings, please know that the rankings are updated on a weekly basis, typically by the end of Monday. For more info, please see our Help page: FAQ for STARmeter, MOVIEmeter, and COMPANYmeter
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