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Fwd: Future of Time at DC AAS meeting
by David Patte ₯ Dec. 20, 2013

Dec. 20, 2013

Forwarded from the International Sundial List, that I am also on... The announcement for a AAS splinter meeting on the leap second / UTC issue is appended. We welcome the participation of members of the sundial community who will be attending the American Astronomical Society meeting or those who may be located near Washington, DC. AAS registration is not required to participate. Please forward the announcement to anybody you think might be interested in the future of solar time. Rob Seaman NOAO -- Dear Colleague, This is an announcement of a splinter meeting to be held at the upcoming 223rd Meeting of the American Astronomical Society at the Gaylord National Resort near Washington, DC: The Future of Time Sunday, 5 January 2014 1:00 pm - 5:00 pm National Harbor 6 (note room change) Time is a very broad subject and contacts are being made among distant corners of the AAS community, including history and E/PO, observatory operations, software and systems, and in various fields of research. The topic is a proposal being vigorously pursued within the International Telecommunication Union, an agency of the United Nations, that would redefine Coordinated Universal TIme (the time on your alarm clock, wristwatch, computer and smartphone) to no longer be tied to the rotation of the Earth. We will discuss the historical context for this unprecedented proposal, as well as its significant implications for the practice of astronomy. More details are on the web page (w/ links to preprints from two previous meetings in 2011 and 2013): http://www.cacr.caltech.edu/futureofutc/aas223/ To maximize flexibility for attendees, the Future of Time agenda is split into two 2 hour sessions (below). Your participation will be welcome at either or both sessions. Rob Seaman, NOAO Ken Seidelmann, U. Virginia Arnold Rots, SAO Alison Peck, NRAO -- Session 1 - The Future of Time I historical context (1:00 pm) Introduction A (brief) history of time in astronomy (K. Seidelmann, UVA) Time scales and concepts (A. Rots, SAO) Time and Navigation: The Untold Story of Getting From Here to There (A. Johnston, NASM) Time and the Earth: Long term trends (for F. R. Stephenson, Durham University) Session 2 - The Future of Time II operational timekeeping issues (3:00 pm) The Name of Time: terminology requirements for UTC (Kara Warburton, Chair, ISO TC 37) Performing a UTC software inventory (R. Seaman, NOAO) Software and astronomical system engineering for time (TBA) Network time and infrastructure (Harlan Stenn, Network Time Foundation) Discussion: Operational implications for observatories (A. Peck, ALMA)

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[tz-announce] 2013i release of tz code and data available
by Paul Eggert Dec. 19, 2013

Dec. 19, 2013

The 2013i release of the tz code and data is available. It reflects the following changes, which were either circulated on the tz mailing list or are relatively minor technical or administrative changes: Changes affecting near-future time stamps: Jordan switches back to standard time at 00:00 on December 20, 2013. The 2006-2011 transition schedule is planned to resume in 2014. (Thanks to Steffen Thorsen.) Changes affecting past time stamps: In 2004, Cuba began DST on March 28, not April 4. (Thanks to Steffen Thorsen.) Changes affecting code The compile-time flag NOSOLAR has been removed, as nowadays the benefit of slightly shrinking runtime table size is outweighed by the cost of disallowing potential future updates that exceed old limits. Changes affecting documentation and commentary The files solar87, solar88, and solar89 are no longer distributed. They were a negative experiment -- that is, a demonstration that tz data can represent solar time only with some difficulty and error. Their presence in the distribution caused confusion, as Riyadh civil time was generally not solar time in those years. tz-link.htm now mentions Noda Time. (Thanks to Matt Johnson.) Here are links to the release files: ftp://ftp.iana.org/tz/releases/tzcode2013i.tar.gz ftp://ftp.iana.org/tz/releases/tzdata2013i.tar.gz The files are also available via HTTP as follows: http://www.iana.org/time-zones/repository/releases/tzcode2013i.tar.gz http://www.iana.org/time-zones/repository/releases/tzdata2013i.tar.gz Each release file has a GPG signature, which can be retrieved by appending ".asc" to the above URLs. Copies of these signatures are appended to this message. As usual, links to the latest release files are here: http://www.iana.org/time-zones/repository/tzcode-latest.tar.gz http://www.iana.org/time-zones/repository/tzdata-latest.tar.gz ftp://ftp.iana.org/tz/tzcode-latest.tar.gz ftp://ftp.iana.org/tz/tzdata-latest.tar.gz This release corresponds to commit 1f4030f845960e51d29d4cac2b18f4457dcaa301 dated Tue Dec 17 07:25:23 2013 -0800 and tagged 2013i in the unofficial github repository at <https://github.com/eggert/tz>. Here are the GPG checksums for the release files: -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.14 (GNU/Linux) iQIcBAABAgAGBQJSsG15AAoJEO2X6Q5iqn40a3sP/10EOORDVTC2YstBG29zmhHQ 4GQYKKOlPYVSEo7A03K8thKB0mzpF2cItm4g5AtiG3A48W2ixjXFm6ghF1UF6qf/ ldfJG6ykSUchjJTMSXN8sc/BKZRP1eXA9Cn0nxIfKzndsqjSzMFdhwzqnPerTtZ7 fT7BlF6OiMKxqDhfs5K6sYLDWBRjS8ODki2MxgKwukBytpD0kU3Lnx8mEG7d550u x7QqOk5xtPcQ+aGcn1RQi9JiWJE5khBYdsUHeudf1kd5YcHHsjIAQhLWIcmt0bAV va9WpaA7n8SbKjbyTPovVn3BxNNnbtCyZMeGI/j1Q+Fg70Nu/nyZov/ygZGf6xoc qyFK5nZlVQjTglSxp7vCUvTQ+MYVi8Ipf1BhbTN1GQoKHRD39JUB7kIRlSh1xJG8 9sdexXSS27R9ffdVfpDw4bX6kLNJ5yUDmLen9tzncSYp4jtL0FI6F2vvGPAwyeLm jN1o9lhvR4V2yNtLUFOhiAYcv3CZBhjLqxymJmKQeH2fqHlMzSpVUzVpcV3bdSnq hPVbCIYVonMvsBfKgq5UtyFqNNrIkjoAmuh/unOuB6umA0kgYjqX9Fcy2dxroW/+ CCJEfMOvC119i28Jh7+q43I27YuehUNvKzAdBokzC2+7qGi162/Hg2065LSTKf4b pZrF3/+mrFhcB8/mL5kS =tRBd -----END PGP SIGNATURE----- -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.14 (GNU/Linux) iQIcBAABAgAGBQJSsG15AAoJEO2X6Q5iqn40IS0P/RZl0vCw1HCki6c8/ZQLkGgP kI8XxLNXIwqRKhqtWPshgATxMz7BPCe1hJZlPZOsbaFg7XEsdFdkH/eoP/nOeZ8X PFgqgFTak7zpXNe/DPCfnghwKv0GbEE8xDtvwfz+AEzAiDxSA2DOXm5QwOn809I+ yW4WN7c0kqFoFI8ZLaU7YlsGh2l1tOQFIylNTQzd4Oh59CwpXEYYtl++vLxZU/iY 0kXwk2Wb2stf7MtoQmnmgNpKgAeW1g1CLwbm/w7aVV1uRfl1jSPvSqMPnSFZgMHH 550p3vYkvpIigtCevb36OQxmoDbyQmpwwW3wiwTRWD+fpRZNYb49pdSRXWTe1jyz 1WRjS0980uiu0R64zlHA3yX7TZLq9860MGlfUZfdGMYShkW2LXJP/eBxVznbMvtR wzge+ZMvYrxyKCZaLUgMJZS7P57z4Br11Y7dm9KBsJ7aEsVzxa4HOpSWLjmPTAeg 1nZ57jEsHgIqKKvb/7ZhcNnN6l0kMp0UEW5HpfYS475pV+T76tmwhnH8cY39glHq /gy6tLKiIHsuRdncNqZr2vemDHZZj6OInG1n/KTDvth8UMPZm6TSFzcmi5K6bPb8 YH6OQdYrp9KNrYz5tQRe1GWsO9/cQQ9H514WJylmoi3kHUlDVwixDMGazc0MgFAY K/1Hs73yGH9zT2rmFKl0 =B1Il -----END PGP SIGNATURE----- _______________________________________________ tz-announce mailing list tz-announce(a)iana.org https://mm.icann.org/mailman/listinfo/tz-announce

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Jordan DST
by Amer Kayed Dec. 17, 2013

Dec. 17, 2013

Hi All As Jordan will return to UTC+2 on Dec 20th what is the change that we should do on the asia file on the time zone before we do zic . also is there any new version of time zone file version will be generated before Dec 20 for Jordan BR [Ericsson]<http://www.ericsson.com/> AMER KAYED Service Engineer Support Ericsson King Hussein Business park Building 5,4th Floor 11194, Jordan Phone +96265540787 Mobile +962777666461 Office +962777666461 Fax +96265540751 amer.kayed(a)ericsson.com www.ericsson.com [http://www.ericsson.com/current_campaign]<http://www.ericsson.com/current_campaign> Legal entity: Ericsson AB, registered office in Amman Jordan . This Communication is Confidential. We only send and receive email on the basis of the terms set out at www.ericsson.com/email_disclaimer<http://www.ericsson.com/email_disclaimer>

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elsie.nci.nih.gov not reachable
by DONATELLA SABELLICO Dec. 16, 2013

Dec. 16, 2013

Hi,I was trying to reach ftp://elsie.nci.nih.gov/pub/tz*.tar.gz but today it told that host not found. Is there any problem? Thanks. Donatella Sabellico. "One Life. One Love. To love each other" Visit IBM TWA Forum! https://ibm.biz/BdxJFs "TWS default certificates must be renewed by December 10 2013" IBM team published the following Alert for TWSd and TWSz Customers: http://www.ibm.com/support/docview.wss?uid=swg21628636 http://www.ibm.com/support/docview.wss?uid=swg21628601 TWA NewsLetter! http://ibm.biz/Bdxij4 Join SMC Connect community! https://www.ibm.com/developerworks/servicemanagement/ IBM Italia S.p.A. Sede Legale: Circonvallazione Idroscalo - 20090 Segrate (MI) Cap. Soc. euro 347.256.998,80 C. F. e Reg. Imprese MI 01442240030 - Partita IVA 10914660153 Società con unico azionista Società soggetta all?attività di direzione e coordinamento di International Business Machines Corporation (Salvo che sia diversamente indicato sopra / Unless stated otherwise above)

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Please add Antarctica/Concordia and MZS to the timezone database
by Paride Legovini Dec. 12, 2013

Dec. 12, 2013

Dear timezone database maintainers, in 2011 you received a request from Paolo Perfetti to add two research stations located in Antarctica to the timezone database, Concordia: https://en.wikipedia.org/wiki/Concordia_Station that follows the Australia/Perth timezone, and Mario Zucchelli, https://en.wikipedia.org/wiki/Mario_Zucchelli_Station that follows New Zealand's NZST. Here is the original request: http://lists.debian.org/debian-glibc/2011/05/msg00157.html As I'm currently located in Concordia (and I will be for a year) I strongly second Paolo's request. As there are already other stations in the database I think that it shouldn't be problem to add these two. Thank you and greetings from Antarctica! Paride

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Jordan DST change
by Mierzejewski, Dominik Dec. 12, 2013

Dec. 12, 2013

Dear time zone data maintainers, Jordan will return to UTC+2 on Dec 20th at 00:00 (clocks will be set back one hour to 23:00). Additionally, the previous rules for DST will return. This decision was made yesterday: http://home.telfort.nl/~t876506/TZworld.html#mea http://www.petra.gov.jo/Public_News/Nws_NewsDetails.aspx?lang=2&site_id=1&N… Regards, -- Dominik Mierzejewski dominik.mierzejewski(a)citi.com

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Jordan back from DST - reverting to UTC+2
by Steffen Thorsen Dec. 11, 2013

Dec. 11, 2013

Jordan Times and other sources say that Jordan is going back to UTC+2 on 2013-12-19 at midnight: http://jordantimes.com/govt-decides-to-switch-back-to-wintertime (in English) Official, in Arabic: http://www.petra.gov.jo/public_news/Nws_NewsDetails.aspx?Menu_ID=&Site_Id=2… We assume they mean going back from 2013-12-20 00:00 to 2013-12-19 23:00, but it could also be one hour later, which is what they have normally done in the past. Based on the wording in the article, they call it coming back to winter time, so I think it would be best to change the Rules for Jordan and Zone for Amman, so it says DST started back in March 2012, never ended for the 2012/2013 winter and lasted all to December 2013. (Our background/permalink about it http://www.timeanddate.com/news/time/jordan-reverses-dst-decision.html ) Best regards, Steffen Thorsen - timeanddate.com

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Re: [tz] open source .net tz compiler
by chris dostert Dec. 8, 2013

Dec. 8, 2013

I recently wrote a compiler for the tz Database written in C#, the source code for which I have made available at: https://github.com/appease/TimeZoneDb As there are no others for .net listed at http://www.iana.org/time-zones/repository/tz-link.html I thought I would reach out and ask about getting this added to the "Other tz compilers" section of the document in order to help anyone looking to consume the tz database from .net Best, -CD

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Time zone in the news
by Arthur David Olson Nov. 19, 2013

Nov. 19, 2013

The 2013-11-04 New Yorker includes "New York Time," a story on an effort to repeal New York City DST laws that differ from US law. The online-but-paywalled link: http://www.newyorker.com/talk/2013/11/04/131104ta_talk_mcgrath @dashdashado

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Local time from lat, lon and UTC
by dusan pecek Nov. 15, 2013

Nov. 15, 2013

Hi, not sure if this is the right place but I will ask anyhow. I am interested in calculation of local time from lat, lon and UTC (ZULU). It basically means that local time in the past can be calculated. Does your database enable to do that. Kind Regards, Dusan

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