Beefy Boxes and Bandwidth Generously Provided by pair Networks
Syntactic Confectionery Delight
 
PerlMonks  

Re^3: Leap Second

by BrowserUk (Pope)
on Dec 31, 2005 at 08:57 UTC ( #520115=note: print w/ replies, xml ) Need Help??


in reply to Re^2: Leap Second
in thread Leap Second

and leap seconds in the past aren't erased.

Leap seconds can need to be subtracted, (due to nutation?), though this is likely to occur much less frequently than their being added. It also doesn't detract from your quoted point, but does complicate things a little.

I also read(search for IERS) that leap seconds are only added on June 31st30th or December 31st, so bi-annual updates should suffice.


Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
Lingua non convalesco, consenesco et abolesco. -- Rule 1 has a caveat! -- Who broke the cabal?
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.


Comment on Re^3: Leap Second
Download Code
Re^4: Leap Second
by Happy-the-monk (Monsignor) on Dec 31, 2005 at 10:35 UTC

    only added on June 31s

    31 June would be a leapday, right? Guess you were thinking about 30 June, the last day of the month.

    Cheers, Sören

      Indeed. Thanks, corrected.


      Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
      Lingua non convalesco, consenesco et abolesco. -- Rule 1 has a caveat! -- Who broke the cabal?
      "Science is about questioning the status quo. Questioning authority".
      In the absence of evidence, opinion is indistinguishable from prejudice.
Re^4: Leap Second
by ysth (Canon) on Jan 01, 2006 at 05:15 UTC
    In an "emergency", IERS could add leap seconds at the end of March or September. Presumably this would happen with less than the 6 months less a few days warning that June/December leap seconds get.
Re^4: Leap Second
by Perl Mouse (Chaplain) on Jan 01, 2006 at 23:31 UTC
    I also read(search for IERS) that leap seconds are only added on June 30th or December 31st, so bi-annual updates should suffice.
    But you don't want to update your lists at the times leap seconds are added (or skipped). We're talking about Date::Calc, and some people use it to calculate dates in the future. You want to update your lists as soon as it has been decided a leap second will be added or skipped. I don't know how often people meet to determine whether we'll need another leap second, but I doubt it's more often than four times a year.
    Perl --((8:>*

Log In?
Username:
Password:

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://520115]
help
Chatterbox?
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others about the Monastery: (4)
As of 2014-07-13 18:58 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    When choosing user names for websites, I prefer to use:








    Results (251 votes), past polls