When is the best time to advertise on tv?

In my experience as a VP of Marketing with over 18 years experience, there are several options:

1) The best time of year to advertise on TV depends on your product, its sales cycle, and your target market's buying patterns.

2) If you're advertising nationally, determine which personality appeals to your target market (if one) and determine your tv ad schedule based on their popularity.

3) The only time to consider TV if you're a smaller company, is if you have a direct response / call to action built into your commercial. If not, you wont' know how the commercial worked and/or if you want to spend the money again.