[tz] 2-hour DST during 2020 Tokyo Olympics?

[John Haxby]

> On 5 Aug 2018, at 05:09, Paul Eggert <eggert at cs.ucla.edu> wrote:
> 
> Phake Nick wrote:
> 
>> - In case if a clock is created specifically for Olympic venues, how could
>> tz database record it?
> 
> In theory we could have an Asia/Tokyo-2020-Olympics zone but I'd rather not, as it doesn't fit into the naming scheme. (Heh, maybe it should be Games/Olympic/2020 instead....)
> 
>> - In case if only Tokyo (and its surrounding area) get DST?
> 
> I suppose we'd create a new zone Asia/Osaka that would eschew DST.
> 
> I looked into the English-language coverage and my impression is they're leaning towards "no". Although Toshiro Muto, director-general of the organizing committee, says that DST is "the only way" to deal with the heat, Prime Minister Shinzo Abe said only that DST "may be a solution" and Chief Cabinet Secretary Yoshihide Suga (the Number 2 in Japan) said that DST would "have major impacts on people’s daily lives". My favorite was Akira Koike, the head of the Japanese Communist Party, who said in a Monday news conference that DST will "send Japan into turmoil as adjustments would be needed for computer systems and many others".
> 
> In the meantime, starting times seem to be mutating a bit. The triathlon start has moved from 10:00 to 08:00. In other news, trees are being planted along the marathon course for shade, and a layer of solar heat-blocking pavement will be put on roadways. I'd never heard of solar heat-blocking pavement until today.
> 
> My sources:
> 
> Japanese government lukewarm on idea of daylight saving time during 2020 Tokyo Games. Japan Times. 2018-07-31. https://www.japantimes.co.jp/news/2018/07/31/national/japanese-government-lukewarm-idea-daylight-saving-time-2020-tokyo-games/
> 
> Triathlon latest sport to adapt to Tokyo 2020 heat concerns. SportBusiness. 2018-08-02. https://www.sportbusiness.com/sport-news/triathlon-latest-sport-adapt-tokyo-2020-heat-concerns
> 
> Ewing L. Canadian athletes prepare for soaring temperatures at Tokyo Summer Olympics in 2020. The Globe and Mail. 2018-08-03. https://www.theglobeandmail.com/sports/olympics/article-canadian-athletes-prepare-for-soaring-temperatures-at-tokyo-olympics/


Not time related, but anyone else wondering "What? How?" for heat blocking road surfaces:
  
http://www.miracool.jp/thesis/thesis16/2848/

Summary: high albedo for near infrared, low albedo for visible.

jch