Movatterモバイル変換


[0]ホーム

URL:


Wayback Machine
19 captures
18 Jun 2015 - 07 Dec 2025
MarAPRMay
11
201520162017
success
fail
COLLECTED BY
Organization:Archive Team
Formed in 2009, the Archive Team (not to be confused with the archive.org Archive-It Team) is a rogue archivist collective dedicated to saving copies of rapidly dying or deleted websites for the sake of history and digital heritage. The group is 100% composed of volunteers and interested parties, and has expanded into a large amount of related projects for saving online and digital history.

History is littered with hundreds of conflicts over the future of a community, group, location or business that were "resolved" when one of the parties stepped ahead and destroyed what was there. With the original point of contention destroyed, the debates would fall to the wayside. Archive Team believes that by duplicated condemned data, the conversation and debate can continue, as well as the richness and insight gained by keeping the materials. Our projects have ranged in size from a single volunteer downloading the data to a small-but-critical site, to over 100 volunteers stepping forward to acquire terabytes of user-created data to save for future generations.

The main site for Archive Team is atarchiveteam.org and contains up to the date information on various projects, manifestos, plans and walkthroughs.

This collection contains the output of many Archive Team projects, both ongoing and completed. Thanks to the generous providing of disk space by the Internet Archive, multi-terabyte datasets can be made available, as well as in use by theWayback Machine, providing a path back to lost websites and work.

Our collection has grown to the point of having sub-collections for the type of data we acquire. If you are seeking to browse the contents of these collections, the Wayback Machine is the best first stop. Otherwise, you are free to dig into the stacks to see what you may find.

The Archive Team Panic Downloads are full pulldowns of currently extant websites, meant to serve as emergency backups for needed sites that are in danger of closing, or which will be missed dearly if suddenly lost due to hard drive crashes or server failures.

A collection of various Wikis throughout the internet, gathered as a last resting spot.
TIMESTAMPS
loading
The Wayback Machine - https://web.archive.org/web/20160411140426/https://mm.icann.org/pipermail/tz/1988-June/009124.html

leap seconds; [0-60] is ok

Bob Devinencifcrf!decwrl.dec.com!devine%cookie.DEC
Thu Jun 2 18:34:27 UTC 1988


> When the first leap seconds were added, which I believe were in 1973,> there were two inserted at the same time.  Thus a single legal value has> had the seconds denoted as "61".  From memory, these two leap seconds> were:>> 1973 June 30 23:59:60> 1973 June 30 23:59:61  No, only one second is ever added at a time.  However, Ron is rightabout the first year (1972) containing two leap seconds.  Below isthe relevant section describing how leap seconds are inserted/deleted.Bob Devine[ On a sidenote to time, the Herstmonceux Castle where the GreenwichObservatory is located is for sale.  You can buy it for only ~$15M.]  From the NBS Special Publication #432 (issued in 1979):    When leap second adjustments are necessary to keep the    broadcast time signals (UTC) within +/- 0.9 second of    the earth-related UT1 time scale, the addition or deletion    of exactly 1 second occurs at the end of the UTC month.    By international agreement, first preference is given to    December 31 or June 30, second preference to March 31 or    September 30, and third preference to any other month.    When a positive leap second is required -- that is, when    UT1 is slow relative to UTC -- an additional second is    inserted beginning 23h 59m 60s of the last day of the    month and ending at 0h 0m 0s of the first day of the    following month.  In this case the last minute of the     month in which there is a leap second contains 61 seconds.    Assuming that unexpected large changes do not occur in the    earth's rotation rate in the future, it is likely that     positive leap seconds will continue to be needed about    once per year.  If, however, the earth should speed up    significantly at some future time, so that UT1 runs at a    _faster_ rate than UTC, then provision is also made for    negative leap seconds in the UTC time scale.  In this    case, exactly one second would be deleted at the end of    some UTC month, and the last minute would contain only    59 seconds.    Positive leap seconds were inserted in all NBS broadcasts    at the end of June 30, 1972 and December 31, 1972 thru 1978.    [ All years since 1978 have had leap seconds.  Bob]


More information about the tzmailing list

[8]ページ先頭

©2009-2026 Movatter.jp