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According to the Hindu panchang, the month of sawan which along with bhadoncomprises India’s monsoon season, began on July 4; rains drenched this parched city on July 5. Was the monsoon on time, or ‘delayed’ as the Met Office kept lamenting? The Union Ministry of Agriculture was clueless how to reassure farmers who sowed the kharifcrop too early.
Dr CK Raju, who played a key role in building India’s first supercomputer Param and received the Telesio-Galilei Academy of Science’s gold medal for 2010 for discovering and correcting a mistake made by Albert Einstein, says the monsoon was similarly ‘delayed’ in 2003, 2004, 2006, 2009, and 2010. Each time, the rains eventually belied the Met Office’s predictions of drought.
It is not wholly synchronous with the earth’s orbit around the sun (sidereal, actual year) due to the precession of the equinoxes, and is around 20 minutes shorter (the difference can accumulate over long periods). Indian astronomy rests on the sidereal year; a better method of timekeeping as the sun’s transit against fixed stars (nakshatras, e.g. Dhruv-tara) is easy to observe and traditionally determined sowing and harvesting activities.
Europe was aware that it lacked the knowledge to precisely calculate the length of either the tropical or sidereal year, which India knew from at least the 3rd century. Hence the Gregorian calendar reform committee headed by Christoph Clavius tried to consult Indian calendrical sources; just prior to the calendar reform of 1582, his student Matteo Ricci was in India, scouting calendrical manuals in Cochin!
The Gregorian calendar reform was needed because the Julian calendar fixed the length of the year very crudely as the Romans were weak with fractions; so the calendar slipped roughly one day every 128 years. By 1582 CE, it had slipped about 10 days out of phase in the 1250-odd years since the Council of Nicaea fixed the date of Easter by fixing the date of the vernal equinox on XII calends (21 March). By the end of the 16th century, the vernal equinox fell around 11 March on the Julian calendar.
The Gregorian reform corrected this anomaly by advancing the calendar by 10 days, and by making every centennial year not a leap year unless divisible by 400 (e.g. 2000). It thus came closer to a more accurate figure for the fractional part of the length of the tropical year. The correction was vital for the practical purpose of fixing latitude from observation of solar altitude at noon, necessary for navigation which was then extremely important for Europe which lagged behind the Indians and Arabs.
Shockingly, after independence, the Indian calendar reform committee adopted the Gregorian calendar and said the seasons depend on the tropical year! Superficially, the tropical year seems supported by astronomical treatises like Surya Siddhanta and PancaSiddhantika, but the passages have been misunderstood. Anyway, even prior to Varahamihıra and the PancaSiddhantika, Aryabhata explicitly advocated the sidereal year; Marxist historians concur that Indian agriculture was linked to the nakshatras.
Modern India has not seriously studied the monsoons, though even today good monsoonsdrive the economy. Late Meghnad Saha believed heat balance alone mattered in configuring the monsoons; CK Raju thinks wind regime is the key, but says major research is necessary to establish a paradigm. The ancients coped by creating over 5000 panchangs, each ‘corrected’ to account for latitude (hence the Kerala monsoon arrives much before rains in Delhi) and longitude. There is a powerful cultural context here – the Indian calendar revolves around the rainy season (varsha) as the year (varsh) relates to rain. It is eternally relevant for agriculture as poor calculations can wreak havoc through mistimed agricultural operations.
The Nehruvian quest for “scientific temper” led to slavish adoption of the Gregorian calendar for calculating the seasons and monsoon rhythm, though objective analysis shows that every year the monsoon arrives in harmony with the panchang, though ‘scientists’ keep bleating about ‘delays’! Refusing to learn from experience or history, they have ruined farmers and harvests.
The keynote of the Hindu calendar is the monsoons on which agriculture rests, and not summer or winter which may be relevant in Europe. Monsoons depend upon the wind regime. The global circulation of wind is not decided solely by the position of the sun. Hot air rises at the equator, but does not descend at the poles. Due to the Coriolis force, the earth’s rotation causes air to be deflected and to descend before the Horse-Latitudes (sub-tropical latitudes between 30 and 35 degrees north and south). Thus, the monsoons also depend upon the Coriolis force, which is an inertial force. Since the only possible inertial framework is one fixed relative to the distant stars, the Coriolis force relates to the sidereal motion of the earth, and monsoons relate to the sidereal year. Had monsoons related to the tropical year, the cumulative difference between the tropical and sidereal year would have put the Indian calendar out of phase. This never happened.
By forcing farmers to abandon the ancient nakshatra-governed seasons in favour of the tropical year, Nehruvian secularism and scientific temper have compromised our food security. An eerie coincidence that has facilitated the eclipse of agriculture from public consciousness is the virtual disappearance of rural symbols once associated with major political parties - Cow and Calf (Congress); Plough and Kisan (Janata, Lok Dal), while the Sickle of the Communist parties has degenerated into an offensive weapon. This is a telling comment on the growing urban bias in our polity and our distorted understanding of the economy, the adverse effects of which have already come to haunt us.
Two decades of liberalization-globalization and thousands of crores of ‘incentives’ later, the service and manufacturing sectors have failed to promote growth or made a dent in employment nation-wide. The economy is gasping for a good monsoon to lift it out of the present morass. Can we at least now trash the liberalization-era myth that there is no link between agriculture and growth?
Sandhya Jain, Editor Vijayvaani | Follow the writer on twitter.com/vijayvaani
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