CODEWITHSUNDEEP
emacs
Shuguang
Shuguang

Reputation: 2071

daylight saving time for display-time-world

I'm in a time zone without daylight saving time. so that

(calendar-dst-starts 2012)
nil

the value of calendar-daylight-savings-starts-time is 0.

I'm using windows xp and emacs 24. How could I get the display-time-world show time with daylight saving time, for example, New York EST5EDT? Default the daylight saving time will not be adjusted to the displayed time.

Upvotes: 0

Views: 389

Answers (2)

M.Javid
M.Javid

Reputation: 95

If you’ve ever dealt with time in PHP you’ve probably been burnt by daylight savings time before.

PHP does provide a way to check if a time is in daylight savings time or not, it’s as simple as using a capital i as the format:

if (date('I', time()))
{
    echo 'We’re in DST!';
}
else
{
    echo 'We’re not in DST!';
}

compare daylight saving time

https://www.timehubzone.com/worldclock/extends

Upvotes: 0

phils
phils

Reputation: 73344

I don't know much about this, but if I configure Emacs so that (calendar-dst-starts 2012) returns nil and calendar-daylight-savings-starts-time is 0 (neither being default values for me), I get the same results from display-time-world as I do otherwise.

If I look at the variable display-time-world-list it says

Its value is (("PST8PDT" "Seattle")
 ("EST5EDT" "New York")
 ("GMT0BST" "London")
 ("CET-1CDT" "Paris")
 ("IST-5:30" "Bangalore")
 ("JST-9" "Tokyo"))

Upvotes: 1

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