Sunrise Defintion Selection Question ?

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|| Jaya Jagannath ||

Dear Dhira Krsna dasa,

 

My comments below:

 

Best Wishes

Sarajit Poddar

SJC- Asia

 

----

 

 

Dear Rao and Narasimha,Hare Rama Krsna!Just wanted to give my two pence opinion

about the sunrise definition.Option-3 The tip of Sun appearing on eastern

horizon, I don't reallyunderstand what is meant with this. Is it the apparent

rising of Sun disktaking into account parallax factor or something? Or is it

what isactually seen as Sun's tip rising, depending on the place one observes

it?In the last case, the sunrise will be different from meter to meter, asone

can live in a mountainous place, and thus see the sunrise considerablydifferent

from say a 100 m distance from there. Also, trees, houses, canblock the vision

so one cannot really trust what is the actual sunrisetime then.

[sP] Ancient times all the activites used to be closely link to the Sun's

movement and hence the rising and setting time of the Sun was given prime

importance. Now what is meant by rising is the issue here. For those people,

rising meant when the first ray of Sun was visible on the horizon. This cannot

be the center of the Sun rising on the horizon as by that time the half of the

solar disk would have risen on the horizon.

But now, what is the difference between the apparent rising and real rising of

the Sun's upper tip? We know that the earth is covered by a thick layer of

atmosphere, which due to refraction, bends the light. Thus, the first ray of

Sun appears on the Horizon, even if the Tip of the sun is below the horizon.

Thus the apparent rising would be the time when we see the Sunlight on the

horizon, irrespective of whether it has reached the horizon.

Now as you said the apparent rising could be difficult as the environment can be

blocked by Trees or Mountains or like... but I think this would only make

differences in few secs in Sunlight.... However, I "feel" that this should be

the time, when Sun's first ray would be visible on the Horizon on a plane and

not obstructed by anything. Moreover the day should be a clear and normal day

as the refractive index of the atmosphere would vary with the quality of the

Atmosphere.

Considering the other two options, it doesn't really matter to take tip

orcenter, from the point of view of actually observing the sunrise, for thesame

reason as given above. Therefore the option I prefer is option - 1,center of

Sun's disk. In the case of Vimsottari dasha - do we calculatefrom Moon's tip or

Moon's center for the correct longitude of Moon? In thesame way, then why would

we calculate Sun's tip rather than Sun's centerfor the actual longitude of Sun?

We do count from the ascending degree tothe descending degree (180° from each

other) in 7th house for theinvisible half of zodiac and from 7th to lagna for

visible half of thezodiac. Then isn't it the actual longitude of Sun (center)

crossing theascending degree which marks Sunrise?

[sP] When we map the Sun in the zodiac, we use the center of the Sun and not any

tip like any other planet. For illustration, when we say that Sun is in the

10deg Aries, we mean that Sun's Center is in 10deg Aries. This is the reason,

why we cannot take the Lagna starting from the Sun's longitude but some 50-60

Arcsecs behind the solar longitude at Sunrise... Or, the Lagna Transits over

the Solar Longitude approximately after 4 mins.

If Center of Sun option is chosen, then at Sunrise, the Lagna and the solar

longitude would be the same. As we know that anything rises (center of that

planet) above the horizon, when Lagna moves over that body. So the solar tip

would rise, when Lagna moves over it! and hence if solar tip option is chosen,

at sunrise, the lagna transits the tip of the Sun, which is approximately 1deg

(longitude) away from the Sun's center (which is Sun's longitude). In this

case, the Sun's logitude (Sun's Center) rises approximately after 4

mins.Anyway, this is my opinion. I'm sure it's shared by many others as

well.For research, have a look at the attached chart - from a

jyotishi'sdaughter who had the time of birth taken accurately to the second (if

wecan believe the doctor who did the caesarean birth) and this is the timeof

cutting umbilical cord.Yours,Dhira Krsna

dasa,Jyotishahttp://www.radhadesh.com------------------------

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Dear Sarajit,

 

Hare Rama Krsna!

 

I'll just reply with a verse from BPHS. You say sunrise is when first rays

of the Sun become apparent in the sky. As far as my eyes can observe and

knowledge reaches, sunrays already appear in the sky at dawn, long before

the Sun rises. Then how can you say it denotes Sunrise?

 

>[sP] Ancient times all the activites used to be closely link to the Sun's

>movement and hence the rising and setting time of the Sun was given

>prime importance. Now what is meant by rising is the issue here. For

>those people, rising meant when the first ray of Sun was visible on the

>horizon. This cannot be the center of the Sun rising on the horizon as by

>that time the half of the solar disk would have risen on the horizon.

 

Let's quote Parasara in BPHS Ch. 9 text 14 Definition of Sandhya:

"3 Ghatikas before the sight of the semi disc (half) of the rising Sun and

a similar duration following the Sun set are called as morning twilight

and evening twilight respectively."

 

Similarly, another description of sandhya is there in Ch. 46, texts 44-49

with reference to semi-disc of Sun.

 

Why Parasara mentioned the semi disc here, and not the tip of the disc, as

Sunrise? Please explain.

 

Yours,

Dhira Krsna dasa,

Jyotisha

http://www.radhadesh.com

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