Hora UTC

En un sistema hay dos relojes:

  • hardware clock
  • system clock

El System clock lo fijan cuatros factores:

  • El valor de la hora
  • El estándar de hora
  • Zona horaria
  • DST (dayling Saving time)

Hay dos estandares de hora:

  • localtime depende de "time zone"
  • UTC coordinated Universal Time es un estándar Global

El reloj hardware

Conocido como CMOS clock o Real Time CLOCK (RTC)

[root@spock Europe]# hwclock --show
Wed 10 May 2017 09:27:26 AM CEST  -0.825893 seconds
#sincroniza la hora RTC con la del sistema 
[root@spock Europe]# hwclock --systohc

Reloj del sistema:

[root@spock zoneinfo]# date
Wed May 10 09:41:51 CEST 2017

[root@spock zoneinfo]# date -u
Wed May 10 07:44:11 UTC 2017


Para cambiarlo:

[root@spock Etc]# cp /etc/localtime /etc/localtime.old

[root@spock Etc]# strings /etc/localtime
TZif2
WEST
WEMT
CEST
TZif2
WEST
WEMT
CEST
CET-1CEST,M3.5.0,M10.5.0/3}}}

[root@spock Etc]# ln -sf /usr/share/zoneinfo/UTC /etc/localtime
[root@spock Etc]# date
Wed May 10 08:03:27 UTC 2017

En España:

  • CET ( Central European Time ) GMT +1
  • CEST( Central European Sumer Time ) GMT +2

Comments

1. anonymous -- 2017-07-28 07:45

You are doing the very nice job guys by your efforts people will get much knowledge on the latest things well. Impulsely review

2. anonymous -- 2017-08-01 07:35

I want to say thank to you people for this great and helpful info. Thanks!!! Real Money Online Slots

3. anonymous -- 2017-08-15 07:23

The quality of your articles and listing is really attractive. Anik Sigal

4. anonymous -- 2017-08-16 13:20

Now this is in actual fact cooperative. It’s very openhanded of you to share this with us. viddyoze price

5. sofia123jas@… -- 2017-11-30 09:43

You guys present there are performing an excellent job. <a href="https://migliorcasinoonlinesicuri.it">https://migliorcasinoonlinesicuri.it</a>

6. khatrirafique1@… -- 2018-03-08 15:33

Awesome blog. I enjoyed reading your articles. This is truly a great read for me. I have bookmarked it and I am looking forward to reading new articles. Keep up the good work writing services

7. anonymous -- 2018-03-21 07:45

Its great ! Thanks a lot for your opinion.

http://theflyslip.net

8. robert -- 2018-04-02 15:30

I have persuaded my cousin to visit http://pickthewriter.com/services-reviews/essay-land to assign her new essay to your writer. Hope she will contact you soon.

9. buy essay -- 2018-04-05 11:22

Took me time to understand all of the comments, but I seriously enjoyed the write-up. It proved being really helpful to me and Im positive to all of the commenters right here! Its constantly nice when you can not only be informed, but also entertained! I am certain you had enjoyable writing this write-up. buy essay

10. cbse 12th results 2018 check now -- 2018-04-10 14:04

I am really enjoying reading your well written articles. It looks like you spend a lot of effort and time on your blog. I have bookmarked it and I am looking forward to reading new articles. Keep up the good work. <a href='https://cbseresults-2018nic.in/'>cbse 12th results 2018 check now</a>

11. khatrirafique1@… -- 2018-04-14 08:02

I feel really happy to have seen your webpage and look forward to so many more entertaining times reading here. Thanks once more for all the details. http://www.loadedrock.com/

12. khatrirafique1@… -- 2018-04-16 08:37

http://intcore.com/en We are tied directly into the sate’s renewal database which allows us to process your request almost instantly.

13. writingjudge -- 2018-04-23 23:32

I am not a good judge to rate anyone's work. But I like their work and also [url=http://writingjudge.com/services/coolessay]CoolEssay ratingsurl are on top currently. The passion of writers reflect in their work, the articles posted not even have one grammatical error. This shows the hard work of them.

14. seo company dubai -- 2018-04-25 19:45

They're produced by the very best degree developers who will be distinguished for your polo dress creating. You'll find polo Ron Lauren inside exclusive array which include particular classes for men, women. [seo company dubai]https://www.gcc-marketing.com//]

15. seo company abu dhabi -- 2018-04-26 10:15

It is the intent to provide valuable information and best practices, including an understanding of the regulatory process. [url=https://www.gcc-marketing.com/web-services/best-seo-company-dubai]seo company abu dhabiurl

16. FIFA World Cup 2018 Schedule -- 2018-05-04 21:57

This post is good enough to make somebody understand this amazing thing, and I’m sure everyone will appreciate this interesting things. http://fifawcup2018.com

17. seo services ajman -- 2018-05-06 10:46

Here at this site really the fastidious material collection so that everybody can enjoy a lot. https://www.gcc-marketing.com

18. anonymous -- 2018-05-18 12:37

Thanks for posting this info. I just want to let you know that I just check out your site and I find it very interesting and informative. I can't wait to read lots of your posts faelvigiafc.com

19. Best Basketball Hoops -- 2018-05-27 12:21
20. web designing -- 2018-05-28 12:06

I have bookmarked your website because this site contains valuable information in it. I am really happy with articles quality and presentation. Thanks a lot for keeping great stuff. I am very much thankful for this site. https://www.gcc-marketing.com

21. Yeh Hai Mohabbatein -- 2018-06-05 07:52

You have done a amazing job with you website http://biggboss.io

22. download pocket edition mod apk free -- 2018-06-05 12:01

Actually I read it yesterday but I had some thoughts about it and today I wanted to read it again because it is very well written. https://apkurgent.com/creehack-apk

Add New Comment