[tz] SGT abbreviation is missing from the IANA tz database

Lu, Can can.lu at baml.com
Wed Feb 21 05:05:55 UTC 2018


Thanks Guy/Paul, the 2nd source is also from wikipeida: https://en.wikipedia.org/wiki/Singapore_Standard_Time

In real world, as I've been living in Singapore for many years, people do use SGT refer to the local time. Please consider add it back to tzdb if possible.

Cheers,
Can

-----Original Message-----
From: Guy Harris [mailto:guy at alum.mit.edu] 
Sent: Wednesday, February 21, 2018 12:25 PM
To: Paul Eggert <eggert at cs.ucla.edu>
Cc: Lu, Can <can.lu at baml.com>; Time Zone Mailing List <tz at iana.org>
Subject: Re: [tz] SGT abbreviation is missing from the IANA tz database

On Feb 20, 2018, at 2:40 PM, Paul Eggert <eggert at cs.ucla.edu> wrote:

> On 02/19/2018 06:55 PM, Lu, Can via tz wrote:
>> SGT is very commonly used in Singapore and it’s also a standard abbreviation for Singapore time. Please refer to: https://urldefense.proofpoint.com/v2/url?u=https-3A__en.wikipedia.org_wiki_List-5Fof-5Ftime-5Fzone-5Fabbreviations&d=DwIFaQ&c=SFszdw3oxIkTvaP4xmzq_apLU3uL-3SxdAPNkldf__Q&r=oKL6O0Ygk-ggygfg19kvLg&m=l2lVRUDeOFHvFCO1-P7tpjXVLLt_XUZOeXBaMBItuaI&s=G0M7oPXkNAaB5B5oRjIAfWE4uJC55RyjGPsGVCQqJ-U&e=  and https://urldefense.proofpoint.com/v2/url?u=https-3A__en.wikipedia.org_wiki_List-5Fof-5Ftime-5Fzone-5Fabbreviations&d=DwIFaQ&c=SFszdw3oxIkTvaP4xmzq_apLU3uL-3SxdAPNkldf__Q&r=oKL6O0Ygk-ggygfg19kvLg&m=l2lVRUDeOFHvFCO1-P7tpjXVLLt_XUZOeXBaMBItuaI&s=G0M7oPXkNAaB5B5oRjIAfWE4uJC55RyjGPsGVCQqJ-U&e= 
> 
> Those two sources

One source, actually - both point at the same Wikipedia page...

> are not reliable for real-world use, as they're derived from old versions of the tz database itself.

...which has

	This article includes a list of references, but its sources remain unclear because it has insufficient inline citations.

at the top.  It has 7 references (plus a non-reference footnote), one of which (for Ireland) is to a law, and the rest of which point to Web sites that may or may not be authoritative - e.g., they may just be using the tzdb as their source.  Most of the time zone abbreviations have *no* reference, so, again, they may have gotten the abbreviations from the tzdb, in Yet Another case of a process similar to citeogenesis:

	https://urldefense.proofpoint.com/v2/url?u=https-3A__xkcd.com_978_&d=DwIFaQ&c=SFszdw3oxIkTvaP4xmzq_apLU3uL-3SxdAPNkldf__Q&r=oKL6O0Ygk-ggygfg19kvLg&m=l2lVRUDeOFHvFCO1-P7tpjXVLLt_XUZOeXBaMBItuaI&s=Qgy33vNDZuOnI0xV0g6quoyIeVapphtuNG2g7-54G7E&e= 

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