gordon.dewis.ca - Random musings from Gordon


Springing forward

March 10, 2017 @ 19:00 By: gordon Category: Astronomy, Current affairs, General

Early Sunday morning, at 2AM, we move our clocks forward an hour in a futile attempt to save energy. As I’ve mentioned in previous years’ versions of this post, daylight save time hasn’t been shown to actually save energy.

Instead of saving energy, there will be an increase in accidents because people are discombobulated by the change in their sleep pattern. As an added “bonus”, there’s a 10% increase the likelihood that you’ll experience a heart attack during the days immediately following the time change. Is it worth it? Not in my opinion.

If you’re a *NIX system administrator you probably updated your systems a couple of years ago, but in case you haven’t you probably should take a look at this. The zdump command should give you something like this:

[gordon@seedling gordon]$ zdump -v /etc/localtime|grep 2017
/etc/localtime  Sun Mar 12 06:59:59 2017 UTC = Sun Mar 12 01:59:59 2017 EST isdst=0 gmtoff=-18000
/etc/localtime  Sun Mar 12 07:00:00 2017 UTC = Sun Mar 12 03:00:00 2017 EDT isdst=1 gmtoff=-14400
/etc/localtime  Sun Nov  5 05:59:59 2017 UTC = Sun Nov  5 01:59:59 2017 EDT isdst=1 gmtoff=-14400
/etc/localtime  Sun Nov  5 06:00:00 2017 UTC = Sun Nov  5 01:00:00 2017 EST isdst=0 gmtoff=-18000

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