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Library => Miscellaneous => Topic started by: rao on November 20, 2020, 06:30:37 AM
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Dear Friends
Can you help me How to plot a BaZi chart without using a 10,000 calendar for any year
- The Four Pillars
- The Luck Cycles
- The Life Pillar
- The conception Pillar
- The start and end of the 24 seasons .
Thank you in advance
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Dear Friends
Can you help me How to plot a BaZi chart without using a 10,000 calendar for any year
- The Four Pillars
- The Luck Cycles
- The Life Pillar
- The conception Pillar
- The start and end of the 24 seasons .
Thank you in advance
The Solar Terms(what you call 24 seasons), are based on the position of the Sun in relation to the Earth during the year.
Calendar is made in such a way(Solar One) that on the 4 important points of the movement, that would be the Solstices and Eqinoxes we have Peach Blossom Month Branch(meaning Mao, You, Zi and Wu).
Basically, the 2 Solar Terms that make each of them end and start with that specific event, and that is always a specific longitude as well.
(270 degrees for Winther Solstice for example).
So the Zi Rat branch will always be made of 2 Solar Terms, one of them 21.大雪 ends exactly when the Sun hits 270 degrees, the next one 22. 冬至 begins as soon as Sun is at 270 degrees.
This is how calendars are made, most of the time, anyway.
As that point is different all around the Earth, since we have timezones and stuff, the exact start of the month may be a few hours difference in different parts of the Earth, one of the reasons using calculator in theory is better then using paper calendar, as the paper calendar will be aligned with a specific place where the longitude is valid for.
Lets make a checkpoint here. : )
Do you get this part?
The Sun changes its relation to the Earth during the year, based on that we make the Solar Terms, based on that we make the Month Branches?
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This is much simpler then it looks, I will try to explain it in more details.
So we view that the Earth circles the Sun in one year(month branches).
That suggests that in relation to the Earth, the Sun is in specific position. We divide that circle to 360 degrees and we view where the Sun is.
Here is how it looks during the year at the 4 major points of the movement.
(https://scienceminion.files.wordpress.com/2014/06/24214.jpg)
The 2 horizontal places of the Earth where it says Summer and Winter are what we call Solstices.
This is the time when the Day ir longest(for Summer), or Day is shortest(Winter).
This are the middle of Wu horse branch and the middle of Zi Rat branch.
That means that if we check when the Solstice is, we can know the precise middle of one branch(as its the end of the first Solar Term that makes the branch and the start of the second)
Where does the longitude come in here?
Well, the longitude or "apparent ecliptical longitude of the Sun)" is just a way to say where on this circle the Sun is.
Apparent means this is when its looked from the Earth(as of course, looking from the Sun, the Earth will be moving, not the Sun).
Ecliptical means that this is in the movement of the ecliptic(that is what is called the plane where this movement is taking place).
Longitude means the position the Sun has, in relation to the movement of the Image.
Sun is the Sun, our local Star.
How we use that... Lets say its 21 june and the Suns longitude is 90.1, now we already know the Sun has just passed the point of its position on the left image in relation to the Earth. So now its still middle of Wu horse branch, but now we just stepped to the second Solar Term(second half) that makes it.
Also means if we know the relation of Day to Night in 2 conservative days we can say what branch we currently are at. While at the Solstices we can even do it with 1 day alone.
In that sense, if we know the longitude, we know where we are in the year in position of the Sun. With 4 major points of Equinoxes and Solstices that mark the 4 major points, the shortest and longest day and the times when the day is equal to the night(on the top and bottom Image).
The other stuff is much simpler, though, this is simple as well, only the terminology make it seem like its not.
Let me know if you need some detail on this. its very simple idea, its just Light that falls on the Earth during the year and the steps through with that happens. Zi Rat being the shortest day, Wu horse being the longest day, so first in the Winter, second in Summer.
(then Mao and You as the day equal to the night in the middle of the movement, while light is increasing in Wood, while light decreasing in Metal).
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Thank You @Gmuli for giving me the insights
Is there any method to calculate the stem and earth branch of the year, month, Day
For example The year stem Can be calculated
The Year ending with zero, is always Geng ( example, 1970, 1990, 2020. 2030... )
the year ending with 1 is always Xin , ( example 1961. 1971, 1991, 2021 ...)
the Year ending with 2 is always Ren
3= Gui
4= Jia
5 = Yi
6= Bing
7 = Ding
8 = wu
9 = ji
Thank you once again for your inputs..
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Thank You @Gmuli for giving me the insights
Is there any method to calculate the stem and earth branch of the year, month, Day
For example The year stem Can be calculated
The Year ending with zero, is always Geng ( example, 1970, 1990, 2020. 2030... )
the year ending with 1 is always Xin , ( example 1961. 1971, 1991, 2021 ...)
the Year ending with 2 is always Ren
3= Gui
4= Jia
5 = Yi
6= Bing
7 = Ding
8 = wu
9 = ji
Thank you once again for your inputs..
Stems are 10, so that will always work, sure.
The branches are 12, so it has to be a little more complex. Not much, though. So lets look the year branch.
We need to know what "Modulus" operator means.
That is different in different programing languages or calculators, for example in Windows Calculator, if we press Alt+3 that will open the programmers calculator.
There its the button named "Mod".
In Javascript its the symbol %. In visual basic its the Mod word etc.
That is a division that leave only the remainder. Since the branches are repeating cycle of 12 for the year, always, that means at any given time we can see at what step is the cycle, add a value to even it out and know the actual branch of the year.
So in Javascript the formula goes like this:
yearbranch = (yearnumber % 12) -3
That means it divides the years by 12, takes the remainder and takes away 3 from it.
If the result is less then 1, we have to add 12 to it and if the month branch is 1 or 2, we have to take away 4 instead of 3(as that would mean its still the previous Chinese year).
Lets try to test this. : )
On Firefox or Chrome browser, press F12 and click the "Console".
Paste this there:
(2020 % 12) - 3
After we press Enter we should get the number of the current year branch(again if its below 1, we add 12)
In this case we will get 1 for Zi.
Alternatively, if we aren't using Firefox or Chrome based browser, can just open this and paste it there:
https://jsfiddle.net/
It will run it on Javascript as well.
(Edit: although for this may need some adjustments, its alert((2020%12)-3)
and need to click Run to see it)
Monthbranches we already covered - its the Solar Longitude, however, since the Gregorian calendar is fixed to the longitude as well, you can just take the dates that are around that time(for example 4 February as start of Yin Tiger Month). It will be inaccurate with a day, sometimes, but for easy calculation it may be good enough.
Daybranch is same for year, only now you need the number of days since specific date. And for that likely will need to know rules for leap years, that is explained in the net, but the formula is exactly the same as the year branch.
P.S. Will continue with the rest if you can follow the stuff this far.