Clock synchronization is the process of coordinating the time across different devices or systems to ensure they all display the same time. This is important in various applications, such as computer networks, telecommunications, and financial transactions, where precise timing is crucial for data integrity and communication. There are several methods for achieving clock synchronization, including the use of protocols like Network Time Protocol (NTP) and Precision Time Protocol (PTP). These protocols help devices adjust their clocks based on a reliable time source, such as atomic clocks or GPS satellites, ensuring that all systems remain in sync.