tz

Download

tz@iana.org

April 2017

27 participants
12 discussions

zone.tab / zone1970.tab inconsistency for TF/UM/VN
by Neil Fuller April 3, 2017

April 3, 2017

This may be a misunderstanding on my part about the file formats of zone.tab and zone1970.tab and how consistent they are expected to be. I expect the exact zone IDs to be different, but there are only a few cases where countries differ in the number of referenced zone IDs. I realize that zone.tab is intended for backward compatibility but it looks like it is being well maintained. Is this difference expected? If it is, can somebody explain? Details below the line. Thanks for all the hard work. Neil. ------------------- 2017b: TF zone.tab: TF -492110+0701303 Indian/Kerguelen zone1970.tab: RE,TF -2052+05528 Indian/Reunion Réunion, Crozet, Scattered Islands TF -492110+0701303 Indian/Kerguelen Kerguelen, St Paul Island, Amsterdam Island ------------------ UM zone.tab: UM +2813-17722 Pacific/Midway Midway Islands UM +1917+16637 Pacific/Wake Wake Island zone1970.tab: AS,UM -1416-17042 Pacific/Pago_Pago Samoa, Midway UM +1917+16637 Pacific/Wake Wake Island US,UM +211825-1575130 Pacific/Honolulu Hawaii ------------------ VN zone.tab: VN +1045+10640 Asia/Ho_Chi_Minh zone1970.tab: TH,KH,LA,VN +1345+10031 Asia/Bangkok Indochina (most areas) VN +1045+10640 Asia/Ho_Chi_Minh Vietnam (south) -- Google UK Limited Registered Office: 6 Pancras Square, London, N1C 4AG Registered in England Number: 3977902

2 2

[PATCH] Give free source for Quinn paper
by Paul Eggert April 2, 2017

April 2, 2017

* leapseconds.awk, zic.8: Mention the NIST-distributed copy of the Quinn paper, too. --- leapseconds.awk | 5 ++++- zic.8 | 5 ++++- 2 files changed, 8 insertions(+), 2 deletions(-) diff --git a/leapseconds.awk b/leapseconds.awk index 21fe540..8cd2f7e 100644 --- a/leapseconds.awk +++ b/leapseconds.awk @@ -20,7 +20,10 @@ BEGIN { print "# periodically uses leap seconds to keep UTC to within 0.9 s of UT1" print "# (which measures the true angular orientation of the earth in space); see" print "# Terry J Quinn, The BIPM and the accurate measure of time," - print "# Proc IEEE 79, 7 (July 1991), 894-905 <http://dx.doi.org/10.1109/5.84965>." + print "# Proc IEEE 79, 7 (July 1991), 894-905 <http://dx.doi.org/10.1109/5.84965>," + print "# reprinted in: Hackman C, Sullivan DB (eds), Time and frequency measurement," + print "# American Association of Physics Teachers (1996)," + print "# <http://tf.nist.gov/general/pdf/1168.pdf>, 75-86." print "# There were no leap seconds before 1972, because the official mechanism" print "# accounting for the discrepancy between atomic time and the earth's rotation" print "# did not exist until the early 1970s." diff --git a/zic.8 b/zic.8 index e5e71f5..25dac78 100644 --- a/zic.8 +++ b/zic.8 @@ -463,7 +463,10 @@ if a second was skipped. .\" than one leap second to be inserted or deleted at a time. .\" The C Standard is in error in suggesting the possibility. .\" See Terry J Quinn, The BIPM and the accurate measure of time, -.\" Proc IEEE 79, 7 (July 1991), 894-905. +.\" Proc IEEE 79, 7 (July 1991), 894-905, reprinted in +.\" Hackman C, Sullivan DB (eds), Time and frequency measurement, +.\" American Association of Physics Teachers (1996), +.\" <http://tf.nist.gov/general/pdf/1168.pdf>, 75-86." .\" or .\" .q ++ .\" if two seconds were added -- 2.9.3

1 0