Time StandardsInternational Atomic TimeGPS TimeLoran-C TimeUTC TimeISO 8601PTPGMTTime ball Time NotionLeap Secondleap yearTimelineTime MachinePTPTime zoneSummer timeJohn Harrison The flowWhere does my computer get the time from? – Tony FinchThis week I was in Rotterdam for a RIPE meeting. On Friday morning I gave a lightning talk called where does my computer get the time from? The RIPE meeting website has a copy of my slides and a video of the talk; this is a blogified low-res version of the slides with a rough and inexact transcript.https://dotat.at/@/2023-05-26-whence-time.htmlThese 'chip-scale' atomic clocks extend precise timing beyond GPS limitsScientists have developed new miniaturized chip-scale atomic clocks that can bring accuracy and stability in regions where GPS doesn't work.https://interestingengineering.com/innovation/chip-scale-atomic-clocks-accuracy-gpsGPS, UTC, and TAI ClocksGPS, Global Positioning System time, is the atomic time scale implemented by the atomic clocks in the GPS ground control stations and the GPS satellites themselves. GPS time was zero at 0h 6-Jan-1980 and since it is not perturbed by leap seconds GPS is now ahead of UTC byhttp://leapsecond.com/java/gpsclock.htm타임존과 moment isBetween('어제', '오늘')한국 사람은 익숙하지 않은 썸머타임. 썸머타임이 있는 나라는 하루가 25시간이나 23시간일 때도 있다. 하루는 24시간인데 왜 들쑥날쑥하는 걸까? 전 세계의 다양한 시간대를 표시하는 방법으로 타임존이 있다. 브라우저는 타임존을 지원하기 위해 몇 가지 방법을 제공한다. 그러나 이 방법만으로는 우리의 웹 서비스가 전 세계 사용자들의 다양한 타임존을 만족시키는 어렵다.https://ui.toast.com/weekly-pick/ko_20200928/
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