You have to make a little effort. Simply claiming to be novice, will not suffice.
Search for : Harappa astronomy
https://www.google.ca/search?q=hara...s=org.mozilla:en-US:official&client=firefox-a
You will find plenty of links.
Briefly , if the reader is willing to put aside the pre-conceptions, and not be clouded by religion, myth, and outright prejudice, then there is plenty of data and information.
The core essence is that the Indian researchers are getting into their stride, and bringing up new material which debunks colonial myths
One such group The Tata institute of Fundamental Research, Mumbai, Dept Of Astrophysics.
They have a list of papers which they have put on their site.
Two names that come to mind are:
Vahia, Menon
Harappan astronomy: Vahia and Sukumar
http://www.tifr.res.in/~archaeo/papers/Harappan Civilisation/Harappan Astronomy.pdf
http://www.tifr.res.in/~archaeo/papers/Harappan Civilisation/Observatory at Dholavira.pdf
A possible astronomical observatory at Dholavira
M N Vahia1, 2 and Srikumar M Menon3
Another useful paper is by Professor Subash Kak
http://arxiv.org/ftp/arxiv/papers/1002/1002.4513.pdf
He writes :
“ The sacred ground for Vedic ritual is the precursor to the temple. The Vedic observances were
connected with the circuits of the sun and the moon (Kak, 1993; Kak, 1995; Kak, 1996). The altar ritual
was associated with the east‐west axis and we can trace its origins to priests who maintained different
day counts with respect to the solstices and the equinoxes. Specific days were marked with ritual
observances that were done at different times of the day.
Figure 6. The three altars of the Vedic house: circular
(earth, body), half‐moon (atmosphere, prāna), square (sky, consciousness)
In the ritual at home, the householder employed three altars that are circular (earth), half‐moon
(atmosphere), and square (sky), which are like the head, the heart, and the body of the Cosmic Man
(Purusha). In the Agnichayana, the great ritual of the Vedic times that forms a major portion of the
narrative of the Yajurveda, the atmosphere and the sky altars are built afresh in a great ceremony to the
east. This ritual is based upon the Vedic division of the universe into three parts of earth, atmosphere,
and sky that are assigned numbers 21, 78, and 261, respectively. The numerical mapping is maintained
by placement of 21 pebbles around the earth altar, sets of 13 pebbles around each of 6 intermediate
(13¯6=78) altars, and 261 pebbles around the great new sky altar called the Uttara‐vedi, which is built
in the shape of a falcon; these numbers add up to 360, which is symbolic representation of the year. The
proportions related to these three numbers, and others related to the motions of the planets, and angles
related to the sightings of specific stars are reflected in the plans of the temples of the historical period
(Kak, 2002b; Kak, 2006a; Kak, 2009; Kaulācara, 1966).
Figure 7. The falcon altar of the Agnichayana altar
The Agnichayana altar is the prototype of the temple and of the tradition of architecture (Vāstu). The
altar is first built of 1,000 bricks in five layers (that symbolically represent the five divisions of the year,
the five physical elements, as well as five senses) to specific designs. The altar is constructed in a
sequence of 95 years, whose details are matched to the reconciliation of the lunar and solar years by
means of intercalary months”
http://ccat.sas.upenn.edu/george/vedi.html
This is a western University, extract from the School of Architecture.
“The second step in the construction of the altar is to determine its location and orientation. The orientation is both spatial and temporal; the orienting procedure determines not only the direction of the ritual object, but also the time of its construction. Similar procedures were utilized to orient any propitious event.
The simplest procedures for determining time and orientation in the Indian tradition utilize gnomons and ropes. The earliest example of the application of this technique occurs in the orientation of the Vedic sacrificial altar. The shadow of a gnomon is used to determine the primary, east-west line, and pegs, cords, and rods are used to layout a square of 240 x 240 angulas,
Note the requirement East – West orientation of the Fire Pits
Couple this with the observatory at Dholvira and you get an idea of the sophistication of astronomy and mathematics in the Harapan age.
Ravi Chaudhary