Formula for calculating Julian Dates

I'm desperately seeking an equation that can calculate the current Julian
date _with time_. I want to use this to write a macro. This equation would
be able to do the conversion using the following integers: year, month,
date, hour, minutes, seconds, each provided separately. Is there such a
formula? Thanks much.
--
Vandija Sanoth )

"Vandija Sanoth" wrote in message ...

I'm desperately seeking an equation that can calculate the current Julian
date _with time_. I want to use this to write a macro. This equation would
be able to do the conversion using the following integers: year, month,
date, hour, minutes, seconds, each provided separately. Is there such a
formula? Thanks much.
--
Vandija Sanoth )

'Lo Vandija --

You might get with Welch...

welch@physun

....he's done already done it...

http://www.physics.mcmaster.ca/Fac_Welch/JD.html

hth

happy days and...
starry starry nights!

--
God! i hope so very deeply
if there is a Heaven,

That all the people traveled there
who died on Nine/Eleven,

And all the people in the world
who spread great hate as well.

But yet i fear the haters shall
most surely boil in Hell.

Paine Ellsworth

"Vandija Sanoth" wrote in message ...

I'm desperately seeking an equation that can calculate the current Julian
date _with time_. I want to use this to write a macro. This equation would
be able to do the conversion using the following integers: year, month,
date, hour, minutes, seconds, each provided separately. Is there such a
formula? Thanks much.
--
Vandija Sanoth )

'Lo Vandija --

You might get with Welch...

welch@physun

....he's done already done it...

http://www.physics.mcmaster.ca/Fac_Welch/JD.html

hth

happy days and...
starry starry nights!

--
God! i hope so very deeply
if there is a Heaven,

That all the people traveled there
who died on Nine/Eleven,

And all the people in the world
who spread great hate as well.

But yet i fear the haters shall
most surely boil in Hell.

Paine Ellsworth

"Vandija Sanoth" wrote in message
...
I'm desperately seeking an equation that can calculate the current Julian
date _with time_. I want to use this to write a macro. This equation would
be able to do the conversion using the following integers: year, month,
date, hour, minutes, seconds, each provided separately. Is there such a
formula? Thanks much.

http://scienceworld.wolfram.com/astr...ulianDate.html

Guillermo

"Vandija Sanoth" wrote in message
...
I'm desperately seeking an equation that can calculate the current Julian
date _with time_. I want to use this to write a macro. This equation would
be able to do the conversion using the following integers: year, month,
date, hour, minutes, seconds, each provided separately. Is there such a
formula? Thanks much.

http://scienceworld.wolfram.com/astr...ulianDate.html

Guillermo

Vandija Sanoth wrote in
:

I'm desperately seeking an equation that can calculate the current
Julian date _with time_. I want to use this to write a macro. This
equation would be able to do the conversion using the following
integers: year, month, date, hour, minutes, seconds, each provided
separately. Is there such a formula? Thanks much.

If you can read BASIC code then download the file CALJD.BAS from
http://skyandtelescope.com/resources...icle_326_4.asp
The hms may be added as a fraction of a day to the "D" input.

The reverse routine is also there as JDCAL.BAS

Martin

Vandija Sanoth wrote in
:

I'm desperately seeking an equation that can calculate the current
Julian date _with time_. I want to use this to write a macro. This
equation would be able to do the conversion using the following
integers: year, month, date, hour, minutes, seconds, each provided
separately. Is there such a formula? Thanks much.

If you can read BASIC code then download the file CALJD.BAS from
http://skyandtelescope.com/resources...icle_326_4.asp
The hms may be added as a fraction of a day to the "D" input.

The reverse routine is also there as JDCAL.BAS

Martin

["G.P"; Sun, 14 Sep 2003 13:11:39 GMT]

http://scienceworld.wolfram.com/astr...ulianDate.html

Thanks to all for replying. I simply couldn't find this information in my
own searching. (I saw so much, maybe I glazed right over it.) I just have
one follow-up question.

Like I believe I mentioned in my original post, I want to make a macro to
handle this (in Boxer Text Editor). I can do the conversion just fine, but I
don't know how to convert the INT in the formula "For all AD dates in the
Gregorian calendar" to macro-speak. Any ideas? (I don't know what class of
programming the Boxer macro language is in, but most of the math is written
in the standard computer syntax (e.g., 3 + 4 * [2 - 3]).)
--
Vandija Sanoth )

["G.P"; Sun, 14 Sep 2003 13:11:39 GMT]

http://scienceworld.wolfram.com/astr...ulianDate.html

Thanks to all for replying. I simply couldn't find this information in my
own searching. (I saw so much, maybe I glazed right over it.) I just have
one follow-up question.

Like I believe I mentioned in my original post, I want to make a macro to
handle this (in Boxer Text Editor). I can do the conversion just fine, but I
don't know how to convert the INT in the formula "For all AD dates in the
Gregorian calendar" to macro-speak. Any ideas? (I don't know what class of
programming the Boxer macro language is in, but most of the math is written
in the standard computer syntax (e.g., 3 + 4 * [2 - 3]).)
--
Vandija Sanoth )

["Vandija Sanoth"; Sun, 14 Sep 2003 18:07:39 GMT]

I just have
one follow-up question.

I have a formula to compute the Julian date. What I really need now is a way
to compute the current UT time into the decimal numbers following the whole
date numbers. Can the decimal time-notation be reliably calculated
independent of the date, since it's only based on the time of day? I would
imagine that there is a simple formula. I'd sincerly appreciate any help.

(FYI, here the macro that gives me the Julian date:

macro InsertJulianDate()
{
int y, m, d, j;
GetDate(y, m, d);
j = d - 32075 + 1461 *(y + 4800 + (m - 14)/12)/4 + 367* (m -2 -
(m - 14)/12*12)/12 - 3*((y + 4900 + (m - 14)/12)/100)/4;
PutInt(j);
}

Now I just need the time too. Thanks!)
--
Vandija Sanoth )