* tz-link.html: Cite RFC 8633 on leap smearing, and update some URLs. --- tz-link.html | 19 ++++++++++++------- 1 file changed, 12 insertions(+), 7 deletions(-) diff --git a/tz-link.html b/tz-link.html index 41d8894..e34ea20 100644 --- a/tz-link.html +++ b/tz-link.html @@ -302,7 +302,7 @@ These are listed roughly in ascending order of complexity and fanciness. time and zones.</li> <li><a href="https://www.timejones.com">TimeJones.com</a>, <a href="https://timezoneconverterapp.com">Time Zone Converter</a> and -<a href="https://worldclock.com">The World Clock</a> +<a href="https://www.worldclock.com">The World Clock</a> are time zone converters.</li> <li><a href="https://twiki.org/cgi-bin/xtra/tzdatepick.html">Date and Time Gateway</a> @@ -312,7 +312,7 @@ href="http://www.convertit.com/Go/ConvertIt/World_Time/Current_Time.ASP">Current Time in 1000 Places</a> uses descriptions of the values.</li> <li><a href="https://timezoneconverterapp.com/">Time Zone Converter</a> uses a pulldown menu.</li> -<li><a href="http://home.kpn.nl/vanadovv/time/TZworld.html">Complete +<li><a href="https://home.kpn.nl/vanadovv/time/TZworld.html">Complete timezone information for all countries</a> displays tables of DST rules. <li><a href="https://www.timeanddate.com/worldclock/">The World Clock – Worldwide</a> lets you sort zone names and convert times.</li> @@ -395,9 +395,9 @@ transition in the <code><abbr>tz</abbr></code> database.</li> <li>The <a href="https://howardhinnant.github.io/date/tz.html">Time Zone Database Parser</a> is a <a href="https://en.wikipedia.org/wiki/C%2B%2B">C++</a> parser and -runtime library that is <a -href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2017/p0355r4.html">moving -forward</a> for inclusion in +runtime library with API <a +href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0355r7.html">adopted +into the draft standard</a> for <a href="https://en.wikipedia.org/wiki/C++20">C++20</a>, the next iteration of the C++ standard. It is freely available under the @@ -749,7 +749,7 @@ coordinates?</a>" discusses other geolocation possibilities.</li> <li><a href="http://statoids.com/statoids.html">Administrative Divisions of Countries ("Statoids")</a> lists political subdivision data related to time zones.</li> -<li><a href="http://home.kpn.nl/vanadovv/time/Multizones.html">Time +<li><a href="https://home.kpn.nl/vanadovv/time/Multizones.html">Time zone boundaries for multizone countries</a> summarizes legal boundaries between time zones within countries.</li> <li><a href="http://manifold.net/info/freestuff.shtml">Manifold Software @@ -963,7 +963,12 @@ sixty seconds. This approach works with the default <code><abbr>tz</abbr></code> "<code>posix</code>" configuration, is <a href="http://bk1.ntp.org/ntp-stable/README.leapsmear">supported</a> by the <abbr>NTP</abbr> reference implementation, and is used by major -cloud service providers.</li> +cloud service providers. However, according to +<a href="https://tools.ietf.org/html/rfc8633#section-3.7.1">§3.7.1 of +Network Time Protocol Best Current Practices</a> +(Internet <abbr>RFC</abbr> 8633), leap smearing is not suitable for +applications requiring accurate UTC or civil time, +and is intended for use only in single, well-controlled environments.</li> <li>The <a href="https://pairlist6.pair.net/mailman/listinfo/leapsecs">Leap Second Discussion List</a> covers <a -- 2.17.1