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Next Previous Contents The Clock Mini-HOWTO Ron Bean, rbean@execpc.com v2.1, November 2000 How to set and keep your computer's clock on time. 1. Introduction 1.1 Does Anybody Really Know What Time It Is? 1.2 Where to Find Stuff: "The Usual Places" 1.3 Acknowledgements 2. How Linux Keeps Track of Time 2.1 Basic Strategies 2.2 Potential Conflicts 2.3 Should the RTC use Local Time or UTC, and What About DST? 2.4 How Linux keeps Track of Time Zones 2.5 The Bottom Line 3. Software 3.1 Clock(8) and Hwclock(8) 3.2 Adjtimex(8) 3.3 Xntpd and ntpd: the Network Time Protocol 3.4 Chrony 3.5 Clockspeed 4. Radio Clocks 4.1 CHU and the "Gadget Box" 4.2 WWV and the "Most Accurate Clock" 4.3 GPS and the "Totally Accurate Clock" 4.4 Low-frequency Time Signals: DCF77, MSF(Rugby), WWVB Next Previous Contents

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