Gordon Cooper wrote:
I once worked in the international section of the New Zealand
Meteorological
Servce, which used Greenwich Time (UTC). So, each day started at noon,
12 hours behind local time. Plenty of scope for confusion there.
But was conveniently in line with the astronomical
I must say that I'm amazed at how long this thread is - but then I
shouldn't be.
Many moons ago, I used to work at the long gone British Mainframe
Computer company ICL. Here, there was a well used term a bicycle sheds
argument. This supposedly came from the sales force retelling how the
Tony Whyman wrote:
I must say that I'm amazed at how long this thread is - but then I
shouldn't be.
Many moons ago, I used to work at the long gone British Mainframe
Computer company ICL. Here, there was a well used term a bicycle sheds
argument. This supposedly came from the sales force
On Do, 2015-05-28 at 17:57 +0200, Jürgen Hestermann wrote:
Am 2015-05-28 um 17:14 schrieb waldo kitty:
i don't know why it isn't confident... am is morning so 12am is the very
first entry into morning as 12pm is the very first entry into afternoon...
i don't understand the confusion or the
I once worked in the international section of the New Zealand Meteorological
Servce, which used Greenwich Time (UTC). So, each day started at noon,
12 hours behind local time. Plenty of scope for confusion there.
Fortunately this was several decades before computers appeared.
Gordon.
On
Jürgen Hestermann wrote:
Am 2015-05-28 um 17:14 schrieb waldo kitty:
i don't know why it isn't confident... am is morning so 12am is the
very first entry into morning as 12pm is the very first entry into
afternoon...
i don't understand the confusion or the problem...
So the day starts with
On 05/27/2015 05:05 AM, Mark Morgan Lloyd wrote:
Gordon Cooper wrote:
We were taught that 24.00 did not exist. Time went from 23.59
to 00.00. The same rule can be applied to 11.59 am pm.
Except where there's a leap second.
speaking of which, guess what is coming up...
[quote]
Date: Mon,
On 05/27/2015 08:48 PM, waldo kitty wrote:
yes... 12:00am is midnight... 00:00am is the same... so also is 00:00
or 24:00 in 24hour time...
AFAIK it's rather set that 24:00 is 00:00 the next day, but 12:00 am is
not 100% confident as Mark says.
-Michael
--
Il 28/05/2015 11:18, Michael Schnell ha scritto:
On 05/27/2015 08:48 PM, waldo kitty wrote:
yes... 12:00am is midnight... 00:00am is the same... so also is 00:00
or 24:00 in 24hour time...
AFAIK it's rather set that 24:00 is 00:00 the next day, but 12:00 am
is not 100% confident as Mark
On 05/28/2015 05:18 AM, Michael Schnell wrote:
On 05/27/2015 08:48 PM, waldo kitty wrote:
yes... 12:00am is midnight... 00:00am is the same... so also is 00:00 or 24:00
in 24hour time...
AFAIK it's rather set that 24:00 is 00:00 the next day, but 12:00 am is not
100% confident as Mark says.
On 05/28/2015 11:57 AM, Jürgen Hestermann wrote:
Am 2015-05-28 um 17:14 schrieb waldo kitty:
i don't know why it isn't confident... am is morning so 12am is the very first
entry into morning as 12pm is the very first entry into afternoon...
i don't understand the confusion or the problem...
On 28/05/15 18:57, Jürgen Hestermann wrote:
Am 2015-05-28 um 17:14 schrieb waldo kitty:
i don't know why it isn't confident... am is morning so 12am is the
very first entry into morning as 12pm is the very first entry into
afternoon...
i don't understand the confusion or the problem...
So
Am 2015-05-28 um 17:14 schrieb waldo kitty:
i don't know why it isn't confident... am is morning so 12am is the very first
entry into morning as 12pm is the very first entry into afternoon...
i don't understand the confusion or the problem...
So the day starts with 12 at midnight and then
On 28/05/15 16:14, waldo kitty wrote:
On 05/28/2015 05:18 AM, Michael Schnell wrote:
On 05/27/2015 08:48 PM, waldo kitty wrote:
yes... 12:00am is midnight... 00:00am is the same... so also is
00:00 or 24:00 in 24hour time...
Day runs from 00:00:00 to 23:59:59 (or ::60) in 24h format ;)
On 2015-05-27 08:19, Michael Van Canneyt wrote:
Does 12:00 am actually exist ? If so, what is that ? Midnight or midday ?
Hence I stick to 24 hour time. ;-)
Regards,
- Graeme -
--
fpGUI Toolkit - a cross-platform GUI toolkit using Free Pascal
http://fpgui.sourceforge.net/
--
For me it works as expcted
var t: TDateTime;
i: integer;
s1, s2, s3, s4 : String;
begin
t := StrToDate('30-12-1899');
i := round (t);
s1 := DateTimeToStr(t);
s2 := IntToStr(i);
t := StrToDate('29-12-1899');
i := round (t);
s3 := DateTimeToStr(t);
s4 := IntToStr(i);
Memo1.Lines.Add (s1
On 2015-05-27 09:17, Michael Schnell wrote:
To me (being born 12/31) it's funny that that the base is not a 1/1,
especially 1/1/0001. But of course this is completely irrelevant.
TDateTime's value of 0 being 1899-12-30 is something Borland adopted
from Microsoft to be compatible with
On 05/27/2015 11:05 AM, Mark Morgan Lloyd wrote:
No it can't. You have to be prepared to parse 12:00 a.m. by context
but it's usually midnight.
Of which day the one that also has 0:pm or of the previous ?
-Michael
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On 05/27/2015 12:59 AM, Sven Barth wrote:
Why should that be funny? TDateTime(0.0) is defined as 12/30/1899
12:00 am. Now add two days and we are at 1/1/1900 12:00 am, so all
is well...
To me (being born 12/31) it's funny that that the base is not a 1/1,
especially 1/1/0001. But of course
Оригинално писмо
От: Michael Van Canneyt
Относно: Re: [Lazarus] Date value 0
До: Lazarus mailing list
Изпратено на: Сряда, 2015, Май 27 10:55:23 EEST
On Wed, 27 May 2015, Kamen Ketev wrote:
How can I use
TDateTime for date before
12/30/1899 12:00 am. I need
Gordon Cooper wrote:
We were taught that 24.00 did not exist. Time went from 23.59
to 00.00. The same rule can be applied to 11.59 am pm.
Except where there's a leap second.
The same rule can be applied to 11.59 am pm.
No it can't. You have to be prepared to parse 12:00 a.m. by context
Juha Manninen wrote:
Amazing! Nobody actually looked at the Mantis report nor the patch I
referred to, but still answered the mail.
The question is about LastUsed date of a Lazarus package link, shown
in one of the IDE's dialog windows.
Value 0 is wrong in this context because nobody created
Michael Schnell wrote:
On 05/27/2015 11:05 AM, Mark Morgan Lloyd wrote:
No it can't. You have to be prepared to parse 12:00 a.m. by context
but it's usually midnight.
Of which day the one that also has 0:pm or of the previous ?
Wp 12-hour clock shows 11:59 p.m. followed by 12:00 a.m.,
Оригинално писмо
От: Michael Schnell
Относно: Re: [Lazarus] Date value 0
До: lazarus@lists.lazarus.freepascal.org
Изпратено на: Сряда, 2015, Май 27 11:44:17 EEST
For me it works as expcted
var t: TDateTime;
i: integer;
s1, s2, s3, s4 : String;
begin
t := StrToDate('30-12
May be using Julian day is better. Or intermediate conversion to it.
http://en.wikipedia.org/wiki/Julian_day
Regards,
Kamen
Оригинално писмо
От: Michael Schnell
Относно: Re: [Lazarus] Date value 0
До: Lazarus mailing list
Изпратено на: Сряда, 2015, Май 27 11:17
On 05/27/2015 03:19 AM, Michael Van Canneyt wrote:
Does 12:00 am actually exist ? If so, what is that ? Midnight or midday ?
Should not that be 00:00 am ? (or is that the same ?)
yes... 12:00am is midnight... 00:00am is the same... so also is 00:00 or 24:00
in 24hour time...
--
NOTE: No
On Wed, 27 May 2015, Sven Barth wrote:
Am 26.05.2015 15:28 schrieb Michael Schnell mschn...@lumino.de:
On 05/26/2015 01:30 PM, Juha Manninen wrote:
Is there some convention how to show a date value 0?
By default it shows year 1899. The patch changed it to ?.
Both funny, as
Am 27.05.2015 09:19 schrieb Michael Van Canneyt mich...@freepascal.org:
On Wed, 27 May 2015, Sven Barth wrote:
Am 26.05.2015 15:28 schrieb Michael Schnell mschn...@lumino.de:
On 05/26/2015 01:30 PM, Juha Manninen wrote:
Is there some convention how to show a date value 0?
By
How can I use
TDateTime for date before
12/30/1899 12:00 am. I need it for astronomical calculations. Is it
possible to be add flag or something else to ignore this border?
Regards,
Kamen --
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On Wed, 27 May 2015 09:19:42 +0200 (CEST)
Michael Van Canneyt mich...@freepascal.org wrote:
[...]
Does 12:00 am actually exist ? If so, what is that ? Midnight or midday ?
Should not that be 00:00 am ? (or is that the same ?)
You are not alone with such questions:
We were taught that 24.00 did not exist. Time went from 23.59
to 00.00. The same rule can be applied to 11.59 am pm.
Gordon.
On 27/05/15 19:57, Mattias Gaertner wrote:
On Wed, 27 May 2015 09:19:42 +0200 (CEST)
Michael Van Canneyt mich...@freepascal.org wrote:
[...]
Does 12:00 am actually
Regarding issue
http://bugs.freepascal.org/view.php?id=27735
Is there some convention how to show a date value 0?
By default it shows year 1899. The patch changed it to ?.
Juha
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Lazarus@lists.lazarus.freepascal.org
Il 26/05/2015 13:30, Juha Manninen ha scritto:
Regarding issue
http://bugs.freepascal.org/view.php?id=27735
Is there some convention how to show a date value 0?
By default it shows year 1899. The patch changed it to ?.
Delphi for value 0 shows 12/30/1899 12:00 am:
On 05/26/2015 01:30 PM, Juha Manninen wrote:
Is there some convention how to show a date value 0?
By default it shows year 1899. The patch changed it to ?.
Both funny, as DateTimeToStr(2.0) is 1-1-00 ;-)
-Michael
--
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Giuliano Colla wrote:
Il 26/05/2015 13:30, Juha Manninen ha scritto:
Regarding issue
http://bugs.freepascal.org/view.php?id=27735
Is there some convention how to show a date value 0?
By default it shows year 1899. The patch changed it to ?.
Delphi for value 0 shows 12/30/1899 12:00 am:
On 05/26/2015 03:30 PM, Mark Morgan Lloyd wrote:
If it were something like Anno Domini 0, which quite simply never
existed, then it could be displayed as invalid.
It's funny, but AFAIK, you are right. By definition, before Year 1 there
was Year -1 and not Year 0.
Why TDateTime seemingly
Am 26.05.2015 15:28 schrieb Michael Schnell mschn...@lumino.de:
On 05/26/2015 01:30 PM, Juha Manninen wrote:
Is there some convention how to show a date value 0?
By default it shows year 1899. The patch changed it to ?.
Both funny, as DateTimeToStr(2.0) is 1-1-00 ;-)
Why should that be
I changed it to Never as suggested by wp. It is a good word in this context.
Juha
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