All devices have a lag time of 48 hours.
Additionally, on the first Tuesday of the final month of each quarter (i.e. March, June, September, December) we update the Spend and Impression totals in each market for Facebook, Twitter, Instagram, Snapchat, TikTok, YouTube, Pinterest, and LinkedIn to account for differences between our projected figures for the quarter, and the actuals announced in quarterly earnings. These optimizations are documented in detail here.