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08-05-2009, 11:07 AM   #31
Sweetpea
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Quote:
 Originally Posted by Mnementh 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...

08-05-2009, 11:34 AM   #32
Gaurnim
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Quote:
 Originally Posted by Alexander Turcic https://www.mobileread.com/forums/pro...timezoneoffset under Date Format and Time Format.
Proud of my geeky self, I have now setup ISO dates.

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

08-05-2009, 12:32 PM   #33
Ea
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Quote:
 Originally Posted by Gaurnim 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.

08-05-2009, 12:36 PM   #34
pdurrant
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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 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 01:00 PM. Reason: typo

08-05-2009, 12:44 PM   #35
Kostas
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Quote:
 Originally Posted by zelda_pinwheel read the start of this thread !
Quote:
 Originally Posted by Alexander Turcic 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!!

08-05-2009, 01:33 PM   #36
Jellby
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Quote:
 Originally Posted by pdurrant 04 C = 40 F (well, give of take a fraction of a degree)
Great, so 40 °C = 04 °F ?

08-05-2009, 01:36 PM   #37
zelda_pinwheel
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Quote:
 Originally Posted by Alexander Turcic 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 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 Thanks a lot! I always thought it's useful to ask silly questions!!
yep !

08-05-2009, 03:45 PM   #38
Who are you?
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Quote:
 Originally Posted by Alexander Turcic 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

08-05-2009, 04:09 PM   #39
Alexander Turcic
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Quote:
 Originally Posted by Who are you? 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!!

08-05-2009, 04:16 PM   #40
pdurrant
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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.....)

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? 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

08-05-2009, 04:19 PM   #41
pdurrant
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Quote:
 Originally Posted by Alexander Turcic 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

08-05-2009, 04:29 PM   #42
Ea
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What did I start I just asked for something simple...

Quote:
 Originally Posted by pdurrant 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!

 08-08-2009, 04:06 AM #43 nohmi2 Pensively observing.     Posts: 1,758 Karma: 12675456 Join Date: Jun 2008 Device: Varied. [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