Exemplary methods for reducing sync time in a precision time protocol network include receiving, by a first PTP slave port of a first network device, timing messages from a second PTP master port of a second network device. The identifying module identifies the touch operation on the touch sensitive display and generates corresponding touch information. In the invention, upon receipt of an update message, the AS verifies the update information according to the maximum time of verifications, which ensures that the time of verifications will not exceed the maximum time of verifications when the AS verifies the update information. The system provides a software object to the application developer. A reverse air bearing surface head for perpendicular recording is provided with an inversed bevel shape to handle skew when recording data on a magnetic recording medium. Through the present invention, daylight saving time can be configured in a single attempt and used permanently.