Have you ever read a "Good morning" in an international IRC-Channel shortly before you leave the office for lunch? In international business time is an illusion as everywhere is a different time. In this talk we'll dive into he depths of Timezones and how to handle them. We'll see why timezones are important and why and how they started to exist. And of course we'll examine how to handle those little buggers efficiently in code and database.


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Mihail Irintchev at 17:39 on 27 May 2017

It's my second time seeing a talk on the topic, and I should say I had a lot of fun! Apart from all the technical aspects of the talk, I enjoyed greatly all the extra info on timezone/summer time paradoxes.

Besides the technical information, this presentation contains lots of interesting stuff about time in real life. Easy to follow, fun.

Peter Fisher at 21:17 on 27 May 2017

This is can be quite an overlooked subject. Lots of developers just do "what ever is easiest" without thinking of the consequences when they need to compare historical dates.
The approach was quite comical. Great content and good delivery.

Cerovac Marko at 03:17 on 28 May 2017

Interesting talk, easy and fun to follow.

My favourite talk of first day even it was last one by the schedule. Light presentation of one of the most iritating topic for most developers. Adjusted for all experience levels. That was the only talk which made me think about it after the end.

Anonymous at 10:47 on 28 May 2017

Srdjan Vranac at 11:35 on 28 May 2017

One of the most interesting talks so far, that yet again proves that time is relative.
Unless you really start looking into time and timezone related problems you usually have no idea how big of a mine field it is.
Andreas shed a nice light on the set of the potential problems you will encounter when working with time, especially with future dates.

This talk gave migraine and that is why it gets 5 stars.

James Titcumb at 13:09 on 28 May 2017

Great subject, interesting and kept some really tongue-in-cheek comedic moments. Superb!

Very well presented. Having wrestled with timezones in the past I enjoyed every minute of it. My only suggestion would be to clarify never to use the timezone abbreviation other than showing it in an app where you know your users aren't going to be confused by it (also never store it).

Nenad Kozul at 02:46 on 2 Jun 2017

Fun fact: All clocks and cell phones in the room suddenly turned to 12:00 AM, January 1, 1970. as this talk was delivered.

Okay, that's probably a lie, but the talk was still great and it delivered quality info on the various gotchas regarding time in the real world of geographical oddities, weird bureaucrats and stubborn politicians.