Astropak Software – Version 1

What is Astropak Software?

This software is based on on Mr Pemmaraju VR Rayudu’s book “How to Read a Horoscope”. The software distinguishes mathematically each planet as benefic or malefic towards the horoscope in study applying the rules and principles in the book. The software then automatically applies these benefic or malefic tendencies and gives predictions–both broad life readings as well as yearly prediction–based on planetary results identified in the book.

The aspects covered in the predictions are body, health, temperament, personality, wealth, courage, education, houses, landed property, conveyances, happiness, children.diseases, enemies, debts, marriage, marital relationship, longevity, prosperity, profession, gains, income, losses and expenditure. The results attributable to your social, economical, circumstantial and environmental factors are only to be taken.

The results of this version of the software are based on Rasi, Navamsa, and Bhava charts only.  Version 2 will include varga charts in the analysis (see the end of this article for more details).

Sample Analysis and Results Report

You can download and view the results of the the analysis and predictions for the Author’s chart generated by the software. This is text file that can be viewed by Notepad, Wordpad, or any other text viewing tool.  Download the report now: Rayudu Astrology Report


Instructions on Using the Software

Please note that this software does not calculate planetary positions. You are required to enter the planetary information as input to the software.

There are several free and online tools you can use to get the planetary information. We recommend that you download Jagannatha Hora, which is free windows software. You can get the software here:

Here are the steps to download and use Astropak software:

Step 1: Download and unzip this file Astropak-Version1 into any folder such as C:\Astro

Step 2: Edit the following two files (BIODATA.DAT and EUPHEMER.DAT) to input the information for the person and chart you want to analyze:


This file contains your name and birth information.  Note that this information is used for display/print purposes only and not for any calculations or analysis. The file has the information in the following sequence:

Name, Sex, City of Birth, State of Birth, Country of Birth, Longitude of birth place, Latitude of Birth place, date of birth in year month day format, (YYYYMMDD), and finally time of birth in 24 hr format (HH:MM:SS)

Here is the Author’s BIODATA.DAT file for reference. You can replace this information with your own. (Note: there should be no spaces in the text on each line)



This file contains your planetary information.  You can obtain this information from Jagannatha Hora.

Enter the degrees in the second column for Lagna and each planet in the order specified.

Then in the 3rd column, enter D or R for Direct or Retrograde. (note that Rahu and Ketu are always Retrograde).

In the last column enter the Rashi number (1 represents Aries, 2 represents Taurus and so on until 12 which represents Pisces).

The 10th house value represents the cusp value of the 10th house. You can get this value from Jagannatha Hora ( When you are in the Basic Info section, click on ‘Houses’ tab at the bottom list and get the 10th house cusp value)

Lagna                 5:55:00               D      7
Sun                     20:51:14              D      5
Moon                  20:09:39             D      10
Mars                  6:33:25                 D      5
Mercury            5:58:38                 D      5
Jupiter               2:06:54                R     11
Venus                 7:04:31                 D     7
Saturn                23:51:1                 R     12
Rahu                  28:00:58               R     7
Ketu                  28:00:58               R     1
10thHouse       5:26:19                  D     4

Step 3: Open a DOS command Window. If you are using Windows 7, click Start and type ‘cmd’ in the text box ‘search programs and file’.

Step 4:   Type the following command to change directory to the location where you unzipped the files. (example directory Astro)

cd c:\Astro

Step 5: Run the software by typing the following command:

astropak > output.txt

The results are stored in output.txt. You can now type notepad output.txt to view the results.


Astropak – Version 2: Advanced Varga Analysis

An advanced version of the astropak software is also available now. This version  takes into account 20 varga charts including the D-150 or Nadi amsa chart (See this article for more details on Nadi Amsa chart).  This version of the software identifies benefic malefic planets in all the varga charts,  adding a level of detail to chart analysis that is not available in any astrology software package to-date, and providing an invaluable tool for researching deeper into varga charts .  

Note that many of the higher-order varga charts are very sensitive to time of birth. For example. the unequal nadi amsas can cause a lagna change for time of birth variations of just a few seconds. Therefore, it is mandatory to carry out birth time correction by  validating the results of the software analysis against actual events in a native’s life. Another technique called the Tattwa/Antar Tattwa siddhanta (see this article for more details) is also valuable for time of birth corrections. Using this technique, readers can apply the birth time correction up to a granularity of 12 seconds. For now, this calculation must be made manually, but a future version of the software will include this calculation automatically.