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From: jak <nospam@please.ty>
Newsgroups: comp.lang.c
Subject: Re: getFirstDayOfMonth()
Date: Wed, 13 Mar 2024 06:01:22 +0100
Organization: A noiseless patient Spider
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jak ha scritto:
> bart ha scritto:
>> For most practical purposes and for the lifetimes of most of the 8 
>> billion people on the planet, leap years do come every four years.
>>
>> That's the case for years 1901 to 2099.
>>
>> What exactly do you expect those news readers that reach a massive 
>> audience to do, get into those details of being divisible or not by 
>> 100 or 400? Maybe they should also mention odd years like 1752 where 
>> there was a calendar reform for even more exceptions to the rule.
>>
>> Half the audience probably barely know what a leap year is.
> 
> 
> You are right, but this usenet is followed by people, professionals and
> computer enthusiasts. I would like to try to make a statistics but I
> think at least 70% read somewhere how to determine if a year is a leap.
> I, example, discovered this by writing my first management program in
> Rmcobol almost 40 years ago.

Instead, I would be curious to understand why nobody follows a standard
about the dates. Let's take this date for example: January 1, 1580.
On the web 50% of the sites searched with "day of week calculator" say
that the day was Tuesday while the others say it was Friday. Excel and
Calc (OpenOffice) say it was Friday and the same says "cal" on *nix if
the "--iso" option is not used. So, someone follows the ISO convention
and others Julian but I read somewhere that the ISO convention had to be
followed in the computer scope.