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Old 08-05-2009, 10:07 AM   #31
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Originally Posted by Mnementh View Post
Erm that would make 50 F become 5 C which is a 5 degree difference which is huge.
Try 0C, whish would be 0F, but is actually 32F...
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Old 08-05-2009, 10:34 AM   #32
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Originally Posted by Alexander Turcic View Post
Proud of my geeky self, I have now setup ISO dates.

The Geek Uprising, conquering the world one date setting at a time.
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Old 08-05-2009, 11:32 AM   #33
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Originally Posted by Gaurnim View Post
Proud of my geeky self, I have now setup ISO dates.

The Geek Uprising, conquering the world one date setting at a time.


I tend to use that one, too, when it's meant for a varied group of readers, for least ambiguity.
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Old 08-05-2009, 11:36 AM   #34
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Very well chosen examples.

And in case anyone is sceptical, it does work for other temperatures too.

04 C = 40 F (well, give of take a fraction of a degree)

Quote:
Originally Posted by Mike L View Post
Don't mess around with dividing by 5/9 or adding 32. Just reverse the digits.

A couple of examples:

28 C = 82 F

16 C = 61 F

Get the idea?

Last edited by pdurrant; 08-05-2009 at 12:00 PM. Reason: typo
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Old 08-05-2009, 11:44 AM   #35
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Originally Posted by zelda_pinwheel View Post
read the start of this thread !
Quote:
Originally Posted by Alexander Turcic View Post
OK, try:

https://www.mobileread.com/forums/pro...timezoneoffset

under Date Format and Time Format.
Thanks a lot!
I always thought it's useful to ask silly questions!!
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Old 08-05-2009, 12:33 PM   #36
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Originally Posted by pdurrant View Post
04 C = 40 F (well, give of take a fraction of a degree)
Great, so 40 °C = 04 °F ?
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Old 08-05-2009, 12:36 PM   #37
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Quote:
Originally Posted by Alexander Turcic View Post
OK, try:

https://www.mobileread.com/forums/pro...timezoneoffset

under Date Format and Time Format.
YAY !!!! thank you alex ! like sweetpea said, i love you too !

Quote:
Originally Posted by Gaurnim View Post
Proud of my geeky self, I have now setup ISO dates.

The Geek Uprising, conquering the world one date setting at a time.


Quote:
Originally Posted by Kostas View Post
Thanks a lot!
I always thought it's useful to ask silly questions!!
yep !
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Old 08-05-2009, 02:45 PM   #38
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Quote:
Originally Posted by Alexander Turcic View Post
Or if you are quick at math, subtract 32, then multiply by 5 and divide by 9.
5/9 happens to be 0.55555, the observing person quickly sees how you can calculate that, it's ½ + ½ /10 + ½ /100

So for the 50°F example the result is
50 -32 = 18
18 / 2 = 9
9 + 0.9 + 0.09 ≈ 10°C
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Old 08-05-2009, 03:09 PM   #39
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Originally Posted by Who are you? View Post
5/9 happens to be 0.55555, the observing person quickly sees how you can calculate that, it's ½ + ½ /10 + ½ /100

So for the 50°F example the result is
50 -32 = 18
18 / 2 = 9
9 + 0.9 + 0.09 ≈ 10°C
Love it!!
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Old 08-05-2009, 03:16 PM   #40
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Oh, I like that one. Very neat. I think I'd simplify by subtracting 30, not 32 and not using the 1/100 term. The two simplifications almost cancel out for extreme temperatures (>100°C or < 100°C)and subtracting one if the answer is double figures or less fixes that.

Quick, what's 450°F in Celcius?

thinks... 450-30=420, 420/2 = 210, 210/10=21, answer = 231 (precise answer is 232.222.....)

How about -200°F
230/2 = 115/10=11, answer = -126°C (precise answer is -128.8888

68°F: 38/2= 19/10 = 1.9, answer = 21°C -1 = 20 (precise answer is 20)

20°F -10/2 = -5/10 = -0.5, answer = -5.5 -1 = -6.5 (precise answer is -6.6666)

Quote:
Originally Posted by Who are you? View Post
5/9 happens to be 0.55555, the observing person quickly sees how you can calculate that, it's ½ + ½ /10 + ½ /100

So for the 50°F example the result is
50 -32 = 18
18 / 2 = 9
9 + 0.9 + 0.09 ≈ 10°C
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Old 08-05-2009, 03:19 PM   #41
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Love it!!
I'm suddenly reminded of a wonderful story by Isaac Asimov, "The Feeling of Power", written in 1957!

http://www.themathlab.com/writings/s...es/feeling.htm
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Old 08-05-2009, 03:29 PM   #42
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What did I start I just asked for something simple...

Quote:
Originally Posted by pdurrant View Post
I'm suddenly reminded of a wonderful story by Isaac Asimov, "The Feeling of Power", written in 1957!

http://www.themathlab.com/writings/s...es/feeling.htm
Thanks for the link - looking forward to reading!
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Old 08-08-2009, 03:06 AM   #43
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[QUOTE=Mike L;542882]Excuse me, but it's not a question of UK vs US. The DD/MM/YY format (or minor variations thereof) is used throughout Europe and much of Africa, Asia and elsewhere. It's not UK-specific.

Most software these days will respect whatever choices the user makes in Regional Settings in Windows Control Panel, or its equivalent in other operating system. That's all that's needed here.

I have to agree with Mnementh that it can be very confusing to see the day and month apparently the wrong way round.[/QUOTE



And to think that I thought that I was the only one with this problem.
I am no longer a lone voice crying in the wilderness.



Cheers
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