Sorry, best-in-class sales teams. With a single infographic, KISSMetrics has spilled the beans on the secrets to your success.
According to this, the optimal time for cold calling is between 8 and 9 a.m. in the morning and 4 and 5 p.m. at night. (I'd like to add that you'll be far more effective with a "warm call," i.e. one that's personalized to the recipient and their situation.)
You should reach out to prospects within 20 minutes of their form submission or inquiry.
The length of the following graphic correlates with its value. This one definitely deserves more than a quick once-over -- absorb its wisdom, implement changes, and then watch your revenue travel up and to the right.