An insurance policy covers the insured at 12:01 a.m. on the day on which coverage begins and expires at 12:01 a.m. on the day of expiration of the policy. However, a policy of insurance on growing crops against loss by hail takes effect at the time and on the day stated on the application for the insurance. The provision allowing a policy of insurance on growing crops against loss by hail to take effect as provided on the application may not be limited or restricted by rule or bulletin of the commissioner.