On 03/29/2017 05:56 PM, Nico Williams wrote:
On Wed, Jan 04, 2017 at 09:49:35AM +0100, Harald Alvestrand wrote:
FWIW, the W3C has switched to defining time inside a Web page in two
segments:
- Page load time, which is UTC-derived (POSIX time extended to
milliseconds), and can jump when the system clock is reset
- Events related to the page load time, which has floating-point
representation, and is guaranteed to be monotonic.
But aren't these relative times (intervals)? As long as they are short
enough, distinctions between UTC, TAI, local, and smeared time will make
little difference most of the time. (Naturally, using local time might
cause a page load time to appear to be negative, or over an hour, around
daylight savings switch overs, or if one is moving across timezones,
thus "most of the time".)
The first is an absolute time. The second is relative.
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