You can see how many lessons you've done and hours spent in total but I don't think you can see it broken down by day. The totals are on the left hand side of your performance graph when you go to the main Tactics Trainer page
E.g., I can see that I have apparently done 15.6 hours and 1311 puzzles' worth of training
Is there a way to view how many tactics I have done in one day? I can only see a screen with the most recent tactics completed.