Good times for calling senior-level executives are generally early mornings before 9:00 a.m. or early evening after 5:00 p.m. Frequently, secretaries are gone, and prospects will answer their own phones. Lunch is also a good time; again, secretaries might be out, and the prospect may be answering her own telephone.
Your industry may have specific times during the day when it is easier to reach people. You’ll know what times it is easiest to reach prospects if you track your calls.