Another one to consider...?

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Edward Henning

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Jun 23, 2011, 7:17:48 AM6/23/11
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One possible thing to consider for the future: I have had for many
years a Tibetan text on Chinese calendar calculations that has long
been on my list of things to possibly translate and computerise - one
day. I reference it a couple of times in my book: "Citsjam" in the
bibliography. (Tenzang, I think I gave you a copy of this in pdf).

A visitor the other day was telling me of an Amdo calendar currently
in use, which is based on the Kalacakra system - terminology,
definitions, etc., but which uses the reasonably accurate calculations
that the Jesuit mission introduced into China, and which had quite an
impact on the Chinese calendar. It turns out that this Amdo calendar
appears to be the one described in "Citsjam".

The fact that this is currently in use in Amdo, rather pushes it up
the priority scale, although I have no example calendar to work with.
Anyway, we should keep this in mind, I think.

I have also recently been told of a Tibetan style Manang calendar in
Nepal, and also preserved there, a "ci lugs" Tibetan calendar -
meaning Chinese system - as opposed to "phug lugs" or "mtshur lugs". I
hope to meet the people that use these later in the year. There's no
rest, is there...?

Edward.

Chönyi

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Jun 29, 2011, 4:55:31 AM6/29/11
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Le 23/06/2011 13:17, Edward Henning a écrit :
> One possible thing to consider for the future: I have had for many
> years a Tibetan text on Chinese calendar calculations that has long
> been on my list of things to possibly translate and computerise - one
> day. I reference it a couple of times in my book: "Citsjam" in the
> bibliography. (Tenzang, I think I gave you a copy of this in pdf).
>
> A visitor the other day was telling me of an Amdo calendar currently
> in use, which is based on the Kalacakra system - terminology,
> definitions, etc., but which uses the reasonably accurate calculations
> that the Jesuit mission introduced into China, and which had quite an
> impact on the Chinese calendar. It turns out that this Amdo calendar
> appears to be the one described in "Citsjam".
>
> The fact that this is currently in use in Amdo, rather pushes it up
> the priority scale, although I have no example calendar to work with.
> Anyway, we should keep this in mind, I think.

Hello,

this seems interesting especially on studying the way they merged the
Kalacakra and modern calculations... Are there differeces with the way
you did it?

I'm still working on some reorganization, tests, etc. of Edward's code
(well, mainly understanding right now), but things are going on though
it's quite long to verify a lot of calculations by hand...

Thank you,
--
Chönyi

Edward Henning

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Jun 29, 2011, 7:14:48 AM6/29/11
to tiba...@googlegroups.com
> this seems interesting especially on studying the way they merged the
> Kalacakra and modern calculations... Are there differeces with the way you
> did it?

Yes, of course, very different. They use mixed radix methods similar
to the standard Tibetan system, but with different base values. For
example, the solar day is subdivided into 24 units, and each of these
into 60, then again 60, then again 60, etc. I am away next week, but
when I get back I'll look into this a bit more...

Edward.

Chönyi

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Jun 30, 2011, 6:53:09 AM6/30/11
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Le 29/06/2011 13:14, Edward Henning a écrit :
>
> Yes, of course, very different. They use mixed radix methods similar
> to the standard Tibetan system, but with different base values. For
> example, the solar day is subdivided into 24 units, and each of these
> into 60, then again 60, then again 60, etc. I am away next week, but
> when I get back I'll look into this a bit more...

That's interesting... but I was wondering if there were deeper
differences, like using a sideral zodiac, etc.?

Thank you,
--
Chönyi

Edward Henning

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Jun 30, 2011, 6:58:05 AM6/30/11
to tiba...@googlegroups.com
Goodness, no. It is tropical. But, be patient a little. Until last
week, I had not opened these books for several years (since putting in
a couple of references in my book, so, 2003-ish). I need to dig into
it all properly, and start constructing some software. But, as I am
away next week, it will be two or three weeks before I can give you
any further information. But I will...

Edward.

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