What was the 12 month planting and harvesting for Ancient Indus vally ??

Answer 1

The people of the Indus Valley prospered on the foundations of an agriculture based system of irrigation and fertility, maintained by silt-bearing floods. Wheat and six-row barley were grown, as were melon seeds, oil crops like sesame and mustard, and dates . The earliest traces of cotton known anywhere in the world have been found in the Valley.
I don't know exactly what you are referring to, but I know that the ability to plant and harvest at least twice a year was possible in the Indus Valley due to climate. The periodic flooding of the rivers; the Indus flooded renewing the land just as the Nile did; and the advanced water systems in the Indus Valley made agriculture highly profitable forr them. Also, crops, planted at different times throughout the growing season, and requiring different lengths of time to mature, had harvests covering a considerable span of time.
Much like modern farming, an intimate knowledge of crops, climate, growing conditions, as well as a working knowledge of the benefits of rotational farming all added together to make the Indus Valley civilization one of agricultural dominance.

Answer 2

It is called the year.