UTC
UTC (Coordinated Universal Time) is the primary time standard by which the world regulates clocks and time. It is a high-precision atomic time standard that approximates mean solar time at the prime meridian (0° longitude) and serves as the basis for civil time worldwide. Unlike time zones, UTC does not observe daylight saving time and provides a consistent reference for global coordination.
Developers should learn and use UTC to ensure consistent time handling across distributed systems, avoid timezone-related bugs, and facilitate international collaboration. It is essential for applications involving scheduling, logging, financial transactions, or any data that needs temporal accuracy across different geographical regions, as it eliminates ambiguity from local time variations.