Mac OS forum

Question

Mac OS date limits

by KKromal / January 16, 2013 7:00 AM PST

OS 7.1 date limits are 1920-2019.
OS 9.2 date limits are 1940-2039.

Is there any (easy) way to get the OS 7.1 Date & Time control panel to accept dates beyond 2019 ?

(OS will accept later dates if the date "rolls over",
but not if you enter it directly !?)

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All Answers

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Answer
This will require an OS change.
by R. Proffitt Forum moderator / January 16, 2013 9:39 AM PST
In reply to: Mac OS date limits

Back to Apple.com and see if they are going to change it.

Remember how such works. All dates will leap forward with such a change.
Bob

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WORKAROUND.
by R. Proffitt Forum moderator / January 17, 2013 3:46 AM PST

There was this old system where the years ended long ago but they wanted to keep using it. Since they just wanted the month, day and day of week to work they figured out that there is a pattern to that and by setting the year to a year that matched the need they could keep using the app.

Funky, but worked.
Bob

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Answer
You'll get no help from Apple on this one
by mrmacfixit Forum moderator / January 16, 2013 8:51 PM PST
In reply to: Mac OS date limits

as they stopped supporting System 7.1 many, many years ago.

I would be tempted to just let if roll over, assuming you have the machine on 24/7

Apart from the novelty value, what is that system used for?

P

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Mac OS date limits
by KKromal / January 18, 2013 2:47 AM PST

Yes, that's my plan.
Just let the system change the date (correctly) by itself.

Not a 24/7 problem, only an issue when the PRAM battery is changed,
and if I clip another PRAM voltage source on while doing this, the date should remain.
Otherwise, iterate the year rollover to get to the correct year.

So I've 'downgraded' the problem from a future problem to a future annoyance !

But to answer your question,
I use my Mac SE's and Powerbook 145b's for stock analysis and investment tracking.
It's not just a novelty thing, but a real tool, and I'm not much interested in upgrading.
For example, I did a TAO TE CHING translation on them,
and developed a definition of Investment Risk showing that
Risk and Reward are INVERSELY proportional !
Luminaries such as Scheinman and John Bogle waffle on the true definition of stock market risk.
(approx. 20 pages - ask me for a copy, if you are interested in such things)

It might be interesting to query Apple about this,
phrasing the question as 'What would it require to ...' just to see their response.
It can't be rocket science to fix this.

But thanks for your reply.
I appreciate your input.

Karl Kromal

So I owe a lot to my OS 7.1 computers.
I have a large stock of them for repair parts,
and plan to use them until the last bolt falls out of the last working unit.

Note: This post was edited by a forum moderator to remove email address to prevent abuse by others and spam harvesters. on 01/18/2013 at 11:16 AM PT

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Nice,
by mrmacfixit Forum moderator / January 18, 2013 8:28 AM PST
In reply to: Mac OS date limits

I still have two working, quite often, SE/30's and I have to smile when I read about how fast a machine will boot with an SSD installed.
My old Mac's boot in around 18 seconds!

That said, although the PRAM battery supplies the power for the date and time, as long as the machine is powered up the date and time will continue to be kept, even if the battery is as dead as a dodo.

I believe I have the service manuals for those machines, although you seem to know them inside out already.
If I can find them, would you be interested?

P

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Answer
Use an NTP server
by jiramirezp / November 22, 2013 5:03 AM PST
In reply to: Mac OS date limits

You could run an NTP server program, like Daemon by Peter N. Lewis, on a machine with Mas OS 9, and change the date there to whatever you need up to 2039.

Then run a clock updater program, like Vremya by Kirill Levchenko, on the machine with Mac OS 7 or Mac OS 8. Type the NTP server's machine IP address in Vremya. Update the time, and voila, you have changed the time and date beyond 2019 on that machine.

I have tried it on both Mac OS 7.6 running on a Colour Classic, and Mac OS 8.6 running on a PowerPC 7100, and the NTP server running on a PowerBook G3 with Mac OS 9.1.

I can't find where to download those programs anymore. I could provide you with a .sit file with the programs if need be.

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