A leap second announcement from the USNO is attached;
as well as a shar-format version of an updated "leapseconds" file.
You'll now find "tzdata93b.tar.Z" on elsie.nci.nih.gov; the only change to it
from "tzdata93.tar.Z" is the updated "leapseconds" file.
--ado
> From ntp-relay(a)ni.umd.edu Tue Feb 2 14:49:18 1993
> Return-Path: <ntp-relay(a)ni.umd.edu>
> Received: from ni.umd.edu by elsie.nci.nih.gov (4.1/SMI-4.1)
> id AA02852; Tue, 2 Feb 93 14:49:14 EST
> Received: by ni.umd.edu id AA06039
> (5.65c/IDA-1.4.4 for ntp-list); Tue, 2 Feb 1993 14:21:15 -0500
> Received: from unbmvs1.csd.unb.ca by ni.umd.edu with SMTP id AA06030
> (5.65c/IDA-1.4.4 for <NTP(a)NI.UMD.EDU>); Tue, 2 Feb 1993 14:20:50 -0500
> Received: from unbmvs1.csd.unb.ca by UNBMVS1.csd.unb.ca (IBM MVS SMTP V2R1)
> with BSMTP id 3951; Tue, 02 Feb 93 15:20:05 AST
> Received: by UNBMVS1 (Mailer 15.14) id 5634; Tue, 02 Feb 93 15:18:57 AST
> Date: Tue, 02 Feb 93 15:18:57 AST
> From: LANG(a)unb.ca
> To: "NTP List" <NTP(a)NI.UMD.EDU>
> Subject: Leap Second Announcement from USNO
> Message-Id: <ID3951.D930202.T151859.LANG(a)unb.ca>
> Status: R
>
>
> -------------------- Start of forwarded message --------------------
> Received: from UNBMVS1(MAILER) by UNBMVS1(Mailer 15.14) id 3871
> for LANG@UNBMVS1; Tue, 02 Feb 93 15:11:45 AST
> Received: by UNBMVS1 (Mailer 15.14) id 2636; Tue, 02 Feb 93 15:09:43 AST
> Date: Tue, 02 Feb 93 15:09:43 AST
> From: <CANSPACE(a)UNB.CA>
> To: <lang@UNBMVS1>
> Received: from unb.ca by UNBMVS1.csd.unb.ca (IBM MVS SMTP V2R1) with TCP;
> Tue, 02 Feb 93 15:08:16 AST
> Received: from by unb.ca (4.1/SMI-4.1-921218.08:05)
> id AZ01277; Tue, 2 Feb 93 15:08:27 AST
> Received: from NEPTUNE.CSD.UNB.CA by NEPTUNE.CSD.UNB.CA (IBM VM SMTP V2R1)
> with BSMTP id 5064; Tue, 02 Feb 93 15:03:20 AST
> Received: from UNBVM1.BITNET (NJE origin LISTSERV@UNBVM1) by NEPTUNE.CSD.UNB.CA
> (LMail V1.1b/1.7e) with BSMTP id 5057; Tue, 2 Feb 1993 14:58:41 -0400
> Comments: Original-Date: Tue, 2 Feb 1993 14:54:47 AST
> X-Reply-To: Richard Langley <lang(a)JUPITER.SUN.CSD.UNB.CA>
> X-Sender: Canadian Space Geodesy Forum <CANSPACE(a)UNBVM1.BITNET>
> X-From: Richard Langley <lang(a)JUPITER.SUN.CSD.UNB.CA>
> Subject: Leap Second Announcement from USNO
> X-To: CANSPACE(a)unb.ca
> X-To: Multiple recipients of list CANSPACE <CANSPACE(a)UNBVM1.BITNET>
> Sender: <CANSPACE(a)UNB.CA>
> Message-ID: <ID3871.D930202.T150943.CANSPACE(a)UNB.CA>
>
> File SER14 -- <930201.1735>
>
>
>
> U.S. NAVAL OBSERVATORY
> WASHINGTON, DC 20392-5420
>
> February 1, 1993
> No. 55
>
> TIME SERVICE ANNOUNCEMENT SERIES 14
>
> UTC TIME STEP
>
> 1. The International Earth Rotation Service (IERS) has announced the
> Introduction of a time step to occur at the end of June 1993.
>
> 2. Coordinated Universal Time (UTC) will be retarded by 1.0s so that the
> sequence of dates of the UTC markers will be:
>
> 1993 June 30 23h 59m 59s
> 1993 June 30 23h 59m 60s
> 1993 July 01 0h 0m 0s
>
> 3. The difference between UTC and International Atomic Time TAI is:
>
> from 1992 Jul 1, 0h UTC, to 1993 Jul.1, 0h UTC: TAI-UTC = +27s
> from 1993 Jul 1, 0h UTC, until further notice: TAI-UTC = +28s
>
> 4. The insertion of one leap second will be evident by the change of
> sign of the DUT1 correction which will become positive. Extrapolated
> values of DUT1 are distributed weekly in the IERS Bulletin A (Time
> Service Announcement Series 7).
>
> 5. All coordinated time scales will be affected by this adjustment.
> However, the Loran-C, GPS and OMEGA systems will not be adjusted
> physically. Tables of Coincidence (Time Service Announcement Series 9)
> will be issued for Loran-C. For GPS, the leap second correction
> contained within the UTC data of subframe 4, page 18 of the navigation
> message transmitted by the satellite will change.
>
> Before the leap second
>
> GPS-UTC = +8s (i.e., GPS is ahead of UTC by eight seconds).
>
> After the leap second
>
> GPS-UTC = +9s (i.e., GPS will be ahead of UTC by nine seconds).
>
> The OMEGA Reference Ephoch (ORE) will change - that is, from 1 July
> 1993 (after the leap second) the OMEGA system will operate with the
> the beginning of segment one on seconds 42, 52, 02, 12, 22, and 32 of
> each minute.
>
> GERNOT M. R. WINKLER
> Director
> Time Service Department
>
> via:
> ==============================================================================
> Richard B. Langley Internet: LANG(a)UNB.CA or SE(a)UNB.CA
> Geodetic Research Laboratory BITnet: LANG@UNB or SE@UNB
> Dept. of Surveying Engineering Phone: (506) 453-5142
> University of New Brunswick FAX: (506) 453-4943
> Fredericton, N.B., Canada E3B 5A3 Telex: 014-46202
> ==============================================================================
> --------------------- End of forwarded message ---------------------
: To unbundle, sh this file
echo file 'leapseconds' >&2
cat >'leapseconds' <<'End of leapseconds'
# @(#)leapseconds 7.6
# Allowance for leapseconds added to each timezone file.
# The International Earth Rotation Service periodically uses leap seconds
# to keep UTC to within 0.9 s of TAI (atomic time); see
# Terry J Quinn, The BIPM and the accurate measure of time,
# Proc IEEE 79, 7 (July 1991), 894-905.
# There were no leap seconds before 1972, because the official mechanism
# accounting for the discrepancy between atomic time and the earth's rotation
# did not exist until the early 1970s.
# The correction (+ or -) is made at the given time, so lines
# will typically look like:
# Leap YEAR MON DAY 23:59:60 + R/S
# or
# Leap YEAR MON DAY 23:59:59 - R/S
# If the leapsecond is Rolling (R) the given time is local time
# If the leapsecond is Stationary (S) the given time is GMT
# Leap YEAR MONTH DAY HH:MM:SS CORR R/S
Leap 1972 Jun 30 23:59:60 + S
Leap 1972 Dec 31 23:59:60 + S
Leap 1973 Dec 31 23:59:60 + S
Leap 1974 Dec 31 23:59:60 + S
Leap 1975 Dec 31 23:59:60 + S
Leap 1976 Dec 31 23:59:60 + S
Leap 1977 Dec 31 23:59:60 + S
Leap 1978 Dec 31 23:59:60 + S
Leap 1979 Dec 31 23:59:60 + S
Leap 1981 Jun 30 23:59:60 + S
Leap 1982 Jun 30 23:59:60 + S
Leap 1983 Jun 30 23:59:60 + S
Leap 1985 Jun 30 23:59:60 + S
Leap 1987 Dec 31 23:59:60 + S
Leap 1989 Dec 31 23:59:60 + S
Leap 1990 Dec 31 23:59:60 + S
Leap 1992 Jun 30 23:59:60 + S
Leap 1993 Jun 30 23:59:60 + S
End of leapseconds
exit
Again forwarded from comp.protocols.time.ntp.
Since the article does not report just when the mayor turned the watch back,
I'll forego making a Hawaii-style change to the southamerica file.
--ado
> From emv(a)msen.com Tue Feb 2 12:43:49 1993
> Path: nih-csl!darwin.sura.net!paladin.american.edu!howland.reston.ans.net!usc!sdd.hp.com!nigel.msen.com!emv
> From: emv(a)msen.com (Edward Vielmetti)
> Newsgroups: comp.protocols.time.ntp
> Subject: Re: [brazil-time] rio de janeiro asks 'what time is it ?'
> Message-ID: <1kmbt3INN36j(a)nigel.msen.com>
> Date: 2 Feb 93 17:43:49 GMT
> References: <1kkdseINNn87(a)nigel.msen.com>
> Distribution: inet
> Organization: Msen, Inc. -- Ann Arbor, Michigan
> Lines: 29
> NNTP-Posting-Host: garnet.msen.com
> X-Newsreader: TIN [version 1.1 PL8]
>
> Edward Vielmetti (emv(a)msen.com) wrote:
> : Clock watchers take note...
>
> Ah, the time crisis in Brazil has passed (this also from REUTER).
>
> AM-BRAZIL-TIME 1STLD
> RIO MAYOR RELUCTANTLY GIVES UP EXTRA HOUR OF DAYLIGHT
>
> (Eds: updates)
> RIO DE JANEIRO, Brazil, Reuter - The mayor of Rio has
> reluctantly agreed to set the city's clocks back one hour,
> ending his defiance of a federal regulation to end summer
> daylight saving time.
> Mayor Cesar Maia turned his own watch back one hour Monday
> after meeting Brazilian President Itamar Franco.
> ``Now the Rio mayor and the president's watches are set for
> the same time,'' Maia said.
> He had ordered city workers to continue on the summer
> schedule until Feb. 28, saying Rio's tourist industry needed the
> extra hour of daylight.
> But Rio banks, businesses, airports, bus stations, stock
> market and major companies operated by the federal government's
> time -- three hours behind Greenwich Mean Time-- causing great
> confusion.
> REUTER
>
> Edward Vielmetti, vice president for research, Msen Inc. emv(a)Msen.com
> Msen Inc., 628 Brooks, Ann Arbor MI 48103 +1 313 998 4562 (fax: 998 4563)
The attached from comp.protocols.time.ntp.
--ado
> From emv(a)msen.com Mon Feb 1 19:05:20 1993
> Path: nih-csl!darwin.sura.net!newsserver.jvnc.net!yale.edu!nigel.msen.com!emv
> From: emv(a)msen.com (Edward Vielmetti)
> Newsgroups: comp.protocols.time.ntp
> Subject: [brazil-time] rio de janeiro asks 'what time is it ?'
> Message-ID: <1kkdseINNn87(a)nigel.msen.com>
> Date: 2 Feb 93 00:05:20 GMT
> Distribution: inet
> Organization: Msen, Inc. -- Ann Arbor, Michigan
> Lines: 50
> NNTP-Posting-Host: garnet.msen.com
> X-Newsreader: TIN [version 1.1 PL8]
>
> Clock watchers take note...
>
> [ Article crossposted from msen.reuters.international ]
> [ Posted on 1 Feb 1993 13:50:34 -0500 ]
>
> AM-BRAZIL-TIME
> RIO DE JANEIRO ASKS 'WHAT TIME IS IT ?'
>
> RIO DE JANEIRO, Brazil, Reuter - Residents of Rio de Janeiro
> woke up Monday wondering what time it is.
> The confusing clock situation arose when Rio Mayor Cesar
> Maia defied a Brazilian government regulation to end summer's
> daylight savings time Sunday and turn the clocks back an hour.
> But Maia, saying Rio's tourism industry needs the extra hour
> of daylight that daylight savings time provides, said the city
> government and everyone and everything associated with it would
> stick with the summertime time schedule until Feb. 28.
> ``I am not going to turn my clock back, nor will the clocks
> controlled by the city be turned back,'' Maia was quoted as
> saying in the Jornal do Brasil newspaper Sunday.
> Rio's banks, most businesses, airports, bus stations and the
> stock market are abiding by the federal government's time.
> Maia said Rio de Janeiro's tourism industry would be hurt by
> moving the clocks back in the middle of the Southern
> Hemisphere's summer.
> ``The mayor said the jobs of 30,000 people depend on this
> extra hour of sunlight, when residents and tourists stay on the
> streets and beaches spending money and having fun,'' the
> spokesman said.
> Maia's decree, which does not apply to the city's suburbs,
> has left most residents wondering whether they should begin
> wearing two watches.
> A spokeswoman for the business owners association said Rio
> stores and shopping centers were using standard time on Monday,
> but it was still not clear what they would do on Tuesday.
> ``The official schedule in Rio is the national standard
> time. The decree does not impose the summer schedule, but rather
> suggests that businesses, services and industry operate on
> summer's time,'' said the mayor's spokesman, adding that Rio's
> public clocks will be reset to national standard time.
> Maia was to meet President Itamar Franco later Monday to
> discuss the time situation, among other things.
> At least for the meeting, the mayor will have to think
> standard time. The meeting is scheduled for 3:30 p.m. federal
> government time, the spokesman said.
> REUTER
>
> Edward Vielmetti, vice president for research, Msen Inc. emv(a)Msen.com
> Msen Inc., 628 Brooks, Ann Arbor MI 48103 +1 313 998 4562 (fax: 998 4563)
