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RishiRahul and vivek

The weekday of the lord of any Bhaava is the best day for activity relating to the Bhaava.
This is used to choose the best Vaara for initiating any activity.

RishiRahul and vivek

Tithi
A lunar month marks the time from one full moon to the next (or one new Moon to the next). The lunar month is divided into 30 parts, called lunar days, or tithis. The tithis are simply the different phases of the moon. Thus the first tithi starts at the moment when the moon is full -- that is, when the angle between the moon and the sun is 180 degrees and it continues until the angle has increased 12 degrees. Then, that much less of the moon seems bright to us: the moon is no longer completely full.
Now the second tithi starts, and it continues until the angle between the sun and moon has increased 12 degrees more. Slightly more of the bright side of the moon now has its back to us, and so the moon is even less full.
When 15 such tithis have passed, the angle between the sun and the moon has increased by 180 degrees. This time the bright side of the moon cannot be seen at all, and so we have a new moon.
Then 15 more tithis gradually pass, and the moon again becomes full. When 30 tithis have thus passed, the month ends.
The period when the moon wanes, or decreases in size, is called krishna paksha ("the dark fortnight"), and the period when it waxes, or increases, is called shukla paksha.

Some lunar calendars start the month from the 0-degree position -- that is, directly after the new moon. Such calendars are called Amanta. Other calendars, start directly after the full moon, with the Krishna paksa. Such calendars are called Suklaanta.

Except for the new moon and the full moon, the names of the tithis are simply counting words: pratipada, dviteeya, triteeya (first, second, third), etc. These names are the same for the tithis occurring during Krishna paksha (the dark period of the moon) and the Shukla paksha (the bright period). The new moon is called amaavasya, and the full moon poornima.


Krsna paksa                         Shukla paksa
Tithi   Name                        Tithi   Name

 1   Pratipat                     1   Pratipat
 2   Dvitiya                      2   Dvitiya
 3   Trtiya                        3   Trtiya
 4   Caturthi                     4   Caturthi
 5   Pancami                    5   Pancami
 6   Sasti                          6   Sasti
 7   Saptami                     7   Saptami
 8   Astami                       8   Astami
 9   Navami                      9   Navami
10   Dasami                    10   Dasami
11   Ekadasi                    11   Ekadasi
12   Dvadasi                   12   Dvadasi
13   Trayodasi                 13   Trayodasi
14   Caturdasi                  14   Caturdasi
15   Amavasya (new moon)           15   Purnima (full moon)

Because the speed of the moon in relation to that of the sun is not constant but varies, a tithi is not a fixed duration of time. Its length fluctuates between 19 and 26 hours. Therefore, since a lunar tithi does not correspond to the 24-hour solar day, a tithi may start at any time of the day.
The lord of a tithi is easy to find. The first tithi, Pratipada of both the Paksha is ruled by Sun and all the subsequent tithis are ruled by planets in the order of weekday lords (Sun, Moon, Mars, Merc, Jup, Ven, Sat, Rahu). The 8th Tithi is ruled by Rahu and so also the Amavasya, however the Purnima is ruled by Saturn. Ketu has no lordship over any tithi.
The rulerships of the Tithis are:
Surya rules Pratipada and Navami.
Chandra rules Dwiteeya and Dashami
Mangal rules Triteeya and Ekaadashi
Budha rules Chaturthi and Dwaadashi
Guru rules Panchami and Trayodashi
Shukra rules Shashtti and Chaturdashi
Shani rules Saptami and Poornima
Raahu rules Ashttami and Amaavasya

Calculation of Tithi: To see which tithi is running at any time find the Angular distance Chandra Has progressed from Surya and divide it by 12 the quoteint plus one will give the Tithi.
Normally any vedic Astrology software will display the Tithi at birth for the native.

See the example chart of a child given previously in this lesson.
The child was born on Shasthi (sixth) Tithi of the Shukla Paksha (Bright half) and hence the Ruler of this Tithi is Shukra.
RishiRahul and vivek.

Tithi is Jala (liquid) and Vaara is Agni (fire). Hence if a native is born when a Graha rules the Vaara as well as the Tithi then it has to represent two opposing forces (Fire and water are enemies). This causes Tatwa Dosha (Flaw due to the elements).
The Bhaavas owned by the Graha as well as the bhaava it is placed in suffers due to this.

In the example given previously the child is born on Shukravaara and Shasthi Tithi, both ruled by Shukra. Hence the fourth, seventh and the eleventh Bhaavas are effected and some unfavorable experiences relating to the above Bhaavas will have to be experienced by this child.

RishiRahul and vivek.

Let us calculate the tithi for the example horoscope given.
Longitude of Surya = 20 deg 38 minutes in Makara.
Longitude of Chandra = 29 degrees and 5 minutes in Meena.
 
                 Chandra = 359 deg  5 min
         minus    Surya= 290 deg 38 min
           gives us            68 deg 27 min

Divide this by 12 we get a quoteint of 5 and remainder 8 deg 27 min.
Which means 5 tithis are over and the sixth is progressing.
So we get the birth tithi to be Shashthi in Shukla Paksha.
Now does the Divisor (Twelve) ring a bell?
Can someone guess or Does anyone know what it means.
Reply ASAP.
RishiRahul and vivek.