How long does it take for Quandl to get the latest data from publishers?

Update times vary by data feed.  

Premium data feeds have guaranteed update times. Please see the respective documentation sections of these data feeds for the exact update times. Daily market data is usually updated within a few hours of the market close.  

Although we have no guaranteed update times for free data feeds, they are usually updated within a few hours of the publisher (for daily data), and within 3 days of the publisher (for weekly, monthly and annual data). Some of these data feeds have irregular update schedules.