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## #26 2011-07-07 04:52:45

bobbym
From: Bumpkinland
Registered: 2009-04-12
Posts: 104,288

### Re: Perpetual calendar

Hi;

Let past 1600 be whatever it was!

That is the right idea.

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
A number by itself is useful, but it is far more useful to know how accurate or certain that number is.

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## #27 2011-07-07 05:04:11

gAr
Member
Registered: 2011-01-09
Posts: 3,479

### Re: Perpetual calendar

Had I seen the Sakamoto's algorithm earlier, it would have saved a day of mine!

"Believe nothing, no matter where you read it, or who said it, no matter if I have said it, unless it agrees with your own reason and your own common sense"  - Buddha?

"Data! Data! Data!" he cried impatiently. "I can't make bricks without clay."

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## #28 2011-07-07 05:07:53

bobbym
From: Bumpkinland
Registered: 2009-04-12
Posts: 104,288

### Re: Perpetual calendar

You can never understand something until you do it yourself. Discover it for yourself. That is better than reading about it.

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
A number by itself is useful, but it is far more useful to know how accurate or certain that number is.

Online

## #29 2011-07-07 05:10:42

gAr
Member
Registered: 2011-01-09
Posts: 3,479

### Re: Perpetual calendar

Yes, that's true.
I never cared about the days of week, now I understand it better!

"Believe nothing, no matter where you read it, or who said it, no matter if I have said it, unless it agrees with your own reason and your own common sense"  - Buddha?

"Data! Data! Data!" he cried impatiently. "I can't make bricks without clay."

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## #30 2011-07-07 05:16:09

bobbym
From: Bumpkinland
Registered: 2009-04-12
Posts: 104,288

### Re: Perpetual calendar

Were you trying to program it?

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
A number by itself is useful, but it is far more useful to know how accurate or certain that number is.

Online

## #31 2011-07-07 05:19:41

gAr
Member
Registered: 2011-01-09
Posts: 3,479

### Re: Perpetual calendar

I had already programmed it by the time I posted the formula.

"Believe nothing, no matter where you read it, or who said it, no matter if I have said it, unless it agrees with your own reason and your own common sense"  - Buddha?

"Data! Data! Data!" he cried impatiently. "I can't make bricks without clay."

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## #32 2011-07-07 05:22:29

bobbym
From: Bumpkinland
Registered: 2009-04-12
Posts: 104,288

### Re: Perpetual calendar

I meant that is what led you to work on it?

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
A number by itself is useful, but it is far more useful to know how accurate or certain that number is.

Online

## #33 2011-07-07 05:29:11

gAr
Member
Registered: 2011-01-09
Posts: 3,479

### Re: Perpetual calendar

Actually, I received a hoax mail, like this one: http://www.snopes.com/inboxer/trivia/fivedays.asp

Then I wrote a program to list out the occurences, and mailed that list to the sender!

Later, I wanted to try out a day of the week formula.

"Believe nothing, no matter where you read it, or who said it, no matter if I have said it, unless it agrees with your own reason and your own common sense"  - Buddha?

"Data! Data! Data!" he cried impatiently. "I can't make bricks without clay."

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## #34 2011-07-07 05:34:50

bobbym
From: Bumpkinland
Registered: 2009-04-12
Posts: 104,288

### Re: Perpetual calendar

Very good! Nothing like a bogus claim to make people check it out.

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
A number by itself is useful, but it is far more useful to know how accurate or certain that number is.

Online

## #35 2011-07-07 05:41:17

gAr
Member
Registered: 2011-01-09
Posts: 3,479

### Re: Perpetual calendar

Yes!
It's disgusting when people act without thinking.
I get outraged when I see the media too acting like headless chickens.

"Believe nothing, no matter where you read it, or who said it, no matter if I have said it, unless it agrees with your own reason and your own common sense"  - Buddha?

"Data! Data! Data!" he cried impatiently. "I can't make bricks without clay."

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## #36 2011-07-07 05:47:00

bobbym
From: Bumpkinland
Registered: 2009-04-12
Posts: 104,288

### Re: Perpetual calendar

Hi gAr;

I do not know about the media elsewhere but over here they are  awful. Twice I was involved in a newsworthy event. Both times I picked up the newspapers the next day. In both cases they did not get any part of the story correct. It was as if they were never there but I knew they were, they interviewed me.

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
A number by itself is useful, but it is far more useful to know how accurate or certain that number is.

Online

## #37 2011-07-07 05:56:35

gAr
Member
Registered: 2011-01-09
Posts: 3,479

### Re: Perpetual calendar

Well, it's the same all over the world I guess!
Media like spreading fake news, gossips, fear, tomorrow is EOW, bombs, patent trolls and some more.
Nothing good happens in this world, they say!

"Believe nothing, no matter where you read it, or who said it, no matter if I have said it, unless it agrees with your own reason and your own common sense"  - Buddha?

"Data! Data! Data!" he cried impatiently. "I can't make bricks without clay."

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## #38 2011-07-07 06:02:42

bobbym
From: Bumpkinland
Registered: 2009-04-12
Posts: 104,288

### Re: Perpetual calendar

Hi;

They are supposed have some sort of journalistic responsibility to report the truth. You know I never listen to the news anymore. I go to the internet. I would rather listen to some crazy person whom at least believes he is speaking the truth than to listen to those who lie on a daily basis.

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
A number by itself is useful, but it is far more useful to know how accurate or certain that number is.

Online

## #39 2011-07-07 06:09:22

gAr
Member
Registered: 2011-01-09
Posts: 3,479

### Re: Perpetual calendar

Hi,

Yes.
Me too. I have secluded myself from television.

"Believe nothing, no matter where you read it, or who said it, no matter if I have said it, unless it agrees with your own reason and your own common sense"  - Buddha?

"Data! Data! Data!" he cried impatiently. "I can't make bricks without clay."

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## #40 2011-07-07 06:17:20

bobbym
From: Bumpkinland
Registered: 2009-04-12
Posts: 104,288

### Re: Perpetual calendar

Hi;

I can not take the commercials. Everybody is always drinking beer.

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
A number by itself is useful, but it is far more useful to know how accurate or certain that number is.

Online

## #41 2011-07-07 06:24:48

gAr
Member
Registered: 2011-01-09
Posts: 3,479

### Re: Perpetual calendar

Hi,

Yes, so true!
Here it's less of beer and more of washing powder, free pen with soap (what a combination!), etc.

In the browsers, we can atleast block the Ads with ad-blockers, we control what we like, that's what fascinates me!

Anyway, it's late here. See you tomorrow!

"Believe nothing, no matter where you read it, or who said it, no matter if I have said it, unless it agrees with your own reason and your own common sense"  - Buddha?

"Data! Data! Data!" he cried impatiently. "I can't make bricks without clay."

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## #42 2011-07-07 06:25:47

bobbym
From: Bumpkinland
Registered: 2009-04-12
Posts: 104,288

### Re: Perpetual calendar

Hi gAr;

See you in a bit.

You would think with a whole race of bloated beer drinkers that they would not have to advertise. My father used to say instead of spending millions on garbage advertising why don't they lower price?

Nope, guys who went to Harvard, and have 824 degrees in economics are powerless to figure out how to keep prices down. Just pass it on to the consumer, yep that will work. Do you need a Harvard education for that?

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
A number by itself is useful, but it is far more useful to know how accurate or certain that number is.

Online

## #43 2011-07-07 06:30:54

bob bundy
Moderator
Registered: 2010-06-20
Posts: 7,577

### Re: Perpetual calendar

hi gAr

Would there be any further correction, say after 10000's of years.

The leap year adjustments are made because the time for the Earth to orbit the Sun is not an exact number of days.

Adding an extra day every fourth year is to avoid precession of the seasons.

The fourth century adjustment is to correct because it's not 365.25 days = 1 year either.

There must be a time in the far distant future when even those two adjustments aren't enough.  Could google it or I'll work it out if you want.  Might take a while though.

Bob

Children are not defined by school ...........The Fonz
You cannot teach a man anything;  you can only help him find it within himself..........Galileo Galilei

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## #44 2011-07-07 06:41:32

bobbym
From: Bumpkinland
Registered: 2009-04-12
Posts: 104,288

### Re: Perpetual calendar

Hi;

This calendar will lose a day or so every 3000 or so years. There is an adjustment on the leap years that will only lose a day in 44 000 years.

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
A number by itself is useful, but it is far more useful to know how accurate or certain that number is.

Online

## #45 2011-07-07 16:57:15

gAr
Member
Registered: 2011-01-09
Posts: 3,479

### Re: Perpetual calendar

Hi all,

There's some info here: http://en.wikipedia.org/wiki/Tropical_year
Looks like it's not decided yet.
After all, the orbit won't be the same always!

"Believe nothing, no matter where you read it, or who said it, no matter if I have said it, unless it agrees with your own reason and your own common sense"  - Buddha?

"Data! Data! Data!" he cried impatiently. "I can't make bricks without clay."

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## #46 2011-07-07 17:09:57

bobbym
From: Bumpkinland
Registered: 2009-04-12
Posts: 104,288

### Re: Perpetual calendar

Yes, it is important to remember that modern astronomy like all the other sciences are just approximations. Calculations far into the future are impossible due to sensitivity to initial conditions.

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
A number by itself is useful, but it is far more useful to know how accurate or certain that number is.

Online

## #47 2011-12-15 16:01:27

Engenuelino
Member
Registered: 2011-07-11
Posts: 8

### Re: Perpetual calendar

If there were no resistance to motion, perpetual motion would work.  However; It would still be useless for as soon as you want that motion to work for you, you would be causing resistance and the motion would diminish and stop.

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## #48 2011-12-15 16:16:28

bobbym
From: Bumpkinland
Registered: 2009-04-12
Posts: 104,288

### Re: Perpetual calendar

Hi;

Easy to make that mistake but this thread has nothing to do with perpetual motion. gAr is speaking about a calendar.

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
A number by itself is useful, but it is far more useful to know how accurate or certain that number is.

Online