Read UTC is Enough for Everyone, Right? by Zach Holman (
Programming time, dates, timezones, recurring events, leap seconds... everything is pretty terrible.
The common refrain in the industry is Just use UTC! Just use UTC! And that's correct... sort of. But if you're stuck building software that deals with time, there's so much more to consider.
It's time... to talk about time.

As programmers, we’re kind of inherently built to want the ABSOLUTE BEST HIGHEST FIDELITY FORMATS OF ALL TIME. Like dammit, I need the timestamp down to the micromillinanosecond for every cheeseburger that gets added to my bespoke Watch-The-BK-Throne app. If I do not have this exact knowledge to the millisecond of when I consumed this BBQ Bacon WHOPPER® Sandwich From Burger King® I may die. 

I totally want this as a Post Kind on my website now!
Annotated on March 03, 2020 at 07:28PM

Read Why You Should Use Timezone Offsets Not Timezone Names by Tantek ÇelikTantek Çelik (
As I started writing my Alaska Cruise Log Day 3 post, the first thing I started describing was the shipboard timezone change, which I realized exposed yet another likely hole or bug in timezone implementations. “Timezone implementations” sounds specialized, yet any application, program,...