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uG
Apr 23, 2003

by Ralp

Bloody posted:

the correct date format is YYYYMMDDhhmmss because it is the only format where time is monotonically increasing

uhhh where is the tz info

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Bloody
Mar 3, 2013

uG posted:

uhhh where is the tz info

timezone problems are independent from time problems

Opinion Haver
Apr 9, 2007

Bloody posted:

time is monotonically increasing

only if you're using TAI or something

prefect
Sep 11, 2001

No one, Woodhouse.
No one.




Dead Man’s Band

uG posted:

uhhh where is the tz info

utc now, utc tomorrow, utc forever

Tiny Bug Child
Sep 11, 2004

Avoid Symmetry, Allow Complexity, Introduce Terror

prefect posted:

est now, est tomorrow, est forever

Notorious b.s.d.
Jan 25, 2003

by Reene

prefect posted:

utc now, utc tomorrow, utc forever

timezones are for the weak

uG
Apr 23, 2003

by Ralp

Bloody posted:

timezone problems are independent from time problems

i dont think ive ever worked on something involving time that didn't involve timezones. well anything important

Suspicious Dish
Sep 24, 2011

2020 is the year of linux on the desktop, bro
Fun Shoe

i now know that tbc works in the same timezone as me

fml

Bloody
Mar 3, 2013

uG posted:

i dont think ive ever worked on something involving time that didn't involve timezones. well anything important

i dont think ive ever worked on something involving computers that didn't involve transistors but that doesn't mean transistors are horrible poo poo for nerds

uG
Apr 23, 2003

by Ralp
the difference is i am working with the times and timezones, you aren't working with the transistors jfc

Bloody
Mar 3, 2013

uG posted:

the difference is i am working with the times and timezones, you aren't working with the transistors jfc

actually im an electrical engineer so

Bloody
Mar 3, 2013

alright im really bored of timechat

hubris.height
Jan 6, 2005

Pork Pro



hail demonlord

PleasingFungus
Oct 10, 2012
idiot asshole bitch who should fuck off

hubris.height posted:

hail demonlord

uG
Apr 23, 2003

by Ralp

hubris.height posted:




hail demonlord

dude needs to work on his parens

Shaggar
Apr 26, 2006
all timezone problems are actually daylight savings time problems. timezones would be easy if the offset was constant.

trex eaterofcadrs
Jun 17, 2005
My lack of understanding is only exceeded by my lack of concern.

Shaggar posted:

all timezone problems are actually daylight savings time problems. timezones would be easy if the offset was constant.

they also change all the loving time.

Shaggar
Apr 26, 2006
eliminate dst now

Suspicious Dish
Sep 24, 2011

2020 is the year of linux on the desktop, bro
Fun Shoe

Shaggar posted:

all timezone problems are actually daylight savings time problems. timezones would be easy if the offset was constant.

still nope

Posting Principle
Dec 10, 2011

by Ralp
http://en.wikipedia.org/wiki/Swatch_Internet_Time

tef
May 30, 2004

-> some l-system crap ->

Shaggar posted:

all timezone problems are actually daylight savings time problems. timezones would be easy if the offset was constant.

lol nope

Opinion Haver
Apr 9, 2007

trex eaterofcadrs posted:

they also change all the loving time.

up until relatively recently (maybe the 70s-80s?) there were timezones that were at offsets like -0:44:30

Shaggar
Apr 26, 2006

how is this a problem? people can still pick their timezone

Opinion Haver
Apr 9, 2007

but at least the DST transitions usually happen on the same day each year, right? and surely there's only one forward jump and one backward jump?

nope gently caress you

tef
May 30, 2004

-> some l-system crap ->
# From Paul Eggert (2007-08-17):
# Since 1970, most of Indiana has been like America/Indiana/Indianapolis,
# with the following exceptions:
#
# - Gibson, Jasper, Lake, LaPorte, Newton, Porter, Posey, Spencer,
# Vandenburgh, and Warrick counties have been like America/Chicago.
#
# - Dearborn and Ohio counties have been like America/New_York.
#
# - Clark, Floyd, and Harrison counties have been like
# America/Kentucky/Louisville.
#
# - Crawford, Daviess, Dubois, Knox, Martin, Perry, Pike, Pulaski, Starke,
# and Switzerland counties have their own time zone histories as noted below.
#

Shaggar
Apr 26, 2006
time zone choice isn't a problem, only offset changes for a time zone are a problem.

Zlodo
Nov 25, 2006

yaoi prophet posted:

but at least the DST transitions usually happen on the same day each year, right? and surely there's only one forward jump and one backward jump?

nope gently caress you

that's exactly why the timezone database is both amazing and frightening

its basically a shitload of comments containing historical research about time zone and DST time in many places and for many years, informed by anecdotes, political decrees, or even folklore

and then a shitload of rules to describe all this in a machine readable format

tef
May 30, 2004

-> some l-system crap ->

Shaggar posted:

time zone choice isn't a problem, only offset changes for a time zone are a problem.

They've all changed over time.


One day we will eliminate leap seconds, daylight savings, and tai offsets. ONE DAY


I WANT TO BELIEVE

Notorious b.s.d.
Jan 25, 2003

by Reene

tef posted:

# From Paul Eggert (2007-08-17):
# Since 1970, most of Indiana has been like America/Indiana/Indianapolis,
# with the following exceptions:
#
# - Gibson, Jasper, Lake, LaPorte, Newton, Porter, Posey, Spencer,
# Vandenburgh, and Warrick counties have been like America/Chicago.
#
# - Dearborn and Ohio counties have been like America/New_York.
#
# - Clark, Floyd, and Harrison counties have been like
# America/Kentucky/Louisville.
#
# - Crawford, Daviess, Dubois, Knox, Martin, Perry, Pike, Pulaski, Starke,
# and Switzerland counties have their own time zone histories as noted below.
#

the politics behind this is dumb as gently caress. indiana didn't go daylight savings when the rest of the country did. stayed straight up "farmer's time" through the 00s. wen a republican became governor on a platform of "business friendliness" he leaned on republicans in the legislature to shut people up about loving dst

the legislature decided this daylight savings / farmer's time poo poo was too controversial, it was too hard to choose between new york and chicago time.

so they made timezones into local option. everyone was mandated to have daylight saving, but individual counties could opt for either eastern or central time. and some of them switched twice: eastern standard TO central daylight TO eastern daylight

this hosed up the tz db real bad and made poo poo really confusing for a few years




tl;dr: gently caress indiana politics. local option timezones are a bad, bad idea

Notorious b.s.d. fucked around with this message at 17:23 on Oct 11, 2013

Zlodo
Nov 25, 2006
# From Peter Ilieve (1994-07-06):
#
# On 17 Jan 1994 the Independent, a UK quality newspaper, had a piece about
# historical vistas along the Thames in west London. There was a photo
# and a sketch map showing some of the sightlines involved. One paragraph
# of the text said:
#
# 'An old stone obelisk marking a forgotten terrestrial meridian stands
# beside the river at Kew. In the 18th century, before time and longitude
# was standardised by the Royal Observatory in Greenwich, scholars observed
# this stone and the movement of stars from Kew Observatory nearby. They
# made their calculations and set the time for the Horse Guards and Parliament,
# but now the stone is obscured by scrubwood and can only be seen by walking
# along the towpath within a few yards of it.'
#
# I have a one inch to one mile map of London and my estimate of the stone's
# position is 51 deg. 28' 30" N, 0 deg. 18' 45" W. The longitude should
# be within about +-2". The Ordnance Survey grid reference is TQ172761.
#
# [This yields GMTOFF = -0:01:15 for London LMT in the 18th century.]

Opinion Haver
Apr 9, 2007

tef posted:

They've all changed over time.


One day we will eliminate leap seconds, daylight savings, and tai offsets. ONE DAY


I WANT TO BELIEVE

i bet it's going to be even more fun when/if we colonize other planets/moons

uG
Apr 23, 2003

by Ralp
cant wait to be on eastern standard earth moon time

Notorious b.s.d.
Jan 25, 2003

by Reene

tef posted:

They've all changed over time.


One day we will eliminate leap seconds, daylight savings, and tai offsets. ONE DAY


I WANT TO BELIEVE

yaoi prophet posted:

i bet it's going to be even more fun when/if we colonize other planets/moons



stardate 48315.6

coffeetable
Feb 5, 2006

TELL ME AGAIN HOW GREAT BRITAIN WOULD BE IF IT WAS RULED BY THE MERCILESS JACKBOOT OF PRINCE CHARLES

YES I DO TALK TO PLANTS ACTUALLY

yaoi prophet posted:

i bet it's going to be even more fun when/if we colonize other planets/moons

vector clocks taught in elementary school

MononcQc
May 29, 2007

"yeah it's GMT-17.43 on that planet but gravitational acceleration offsets it a an increasing N µs every local trillion ms for Earth"

X-BUM-RAIDER-X
May 7, 2008
everybody should just use one timezone and one timezone only and get over their stupid 'ughhg i work at 9 and leave at 5' attitude

X-BUM-RAIDER-X
May 7, 2008
might i suggest UTC as the one true timezone with everything else being a huge pile of bullshit

X-BUM-RAIDER-X
May 7, 2008
the british empire clearly did not go far enough with their suppression of false timezone beliefs

Bloody
Mar 3, 2013

OBAMA BIN LinkedIn posted:

the british empire clearly did not go far enough with their suppression

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Zlodo
Nov 25, 2006
i remember PSO on dreamcast and its usage of swatch internet time
http://www.swatch.com/zz_en/internettime/

:rip:

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