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That sounds like a simple question, but you’d be surprised at how complex the infrastructure provides you with an accurate time. When your users exist across time zones or even travel across time zones while using your systems, there’s an expectation that everything works seamlessly. But it’s not simple. Example: You have an employee in Phoenix who needs to schedule an email for 8:00 AM on Monday for his company in Los Angeles. Phoenix doesn’t adjust for daylight savings time; Los Angeles does. And what about the recipients.
This results in an extra hour of daylight in the evenings during the summer months, but it also means that the sun rises and sets an hour earlier in the mornings and evenings, respectively, during the winter months. Real-Time Clock (RTC) – your computer maintains the time, even when turned off, using a chip known as the RTC. When it’s not powered, a small Kazakhstan Phone Number List battery keeps the chip ticking (pun intended) and can power it for up to a decade without charge. Network Time Protocol (NTP) – when operating systems have an established connection to the internet, they use NTP to synchronize their clocks with a pool of time servers, including those provided by Network Time Protocol.
By default, Windows synchronizes with NTP servers once every 7 days, while macOS synchronizes once every hour. NTPs maintain their time using coordinated universal time (UTC). When a client requests the current time from an NTP server, the server responds with a 64-bit value representing the number of seconds since January. Coordinated Universal Time (UTC) – a standardized time used as the basis for all timekeeping in the world. It is based on the International Atomic Time (TAI), which measures the average time elapsed between two specific points in the orbits of Earth’s moon.
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發表於 2024-4-22 23:33:28