All landing aircraft from JTN VOR/DME or EKIMU shall report TWR Controller the time of passing the longitude line of E120° 40' fifteen minutes before flying across the longitude line of E120° 40' . If the difference between actual time and the first reported time is more than 1 minute (including 1 minute) , pilot shall report TWR controller again. If the transponder code is changed after the first location reporting, pilot shall report TWR controller;