It takes at least 3 or 4 days, and sometimes longer over weekends and/or with certain restaurants.

My midday Friday dine only showed up today (not yesterday when you had posted your question).

Friday to Monday, that's 3 days. I don't recall ever seeing it post faster than that.

(And the email typically takes at least an extra day! I often have long since logged in, seen the dine, and done the review, by the time I get the email asking me to do the review!)