Sharma, Lakhi and De, S. and Kandpal, P. and Olaniya, M. P. and Yadav, S. and Bhardwaj, T. and Thorat, P. and Panja, S. and Arora, P. and Sharma, N. and Agarwal, A. and Senguttuvan , T. D. and Ojha, V. N. and Aswal, D. K. (2018) Necessity of 'two time zones: 1ST-I (UTC+5: 30 h) and 1ST-II (UTC+6: 30 h)' in India and its implementation. Current Science, 115 (7). pp. 1252-1261. ISSN 0011-3891

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A strong demand of a separate time zone by northeast populace has been a matter of great debate for a very long period. However, no implementable solution to this genuine problem has yet been proposed. The CSIR-National Physical Laboratory, CSIR-NPL (the National Measurement Institute, NMI, of India and custodian of Indian Standard Time, 1ST) proposes an implementable solution that puts the country in two time zones: (1) IST-I (UTC + 5 : 30 h, represented by longitude passing through 82 degrees 33E) covering the regions falling between longitude 68 degrees 7 E and 89 degrees 52 E and (ii) IST-II (UTC + 6 : 30 h, represented by longitude passing through 97 degrees 30 E) encompassing the regions between 89 degrees 52 E and 97 degrees 25 E. The proposed demarcation line between IST-I and IST-II, falling at longitude 89 degrees 52 E, is derived from analyses of synchronizing the circadian clocks to normal office hours (9 : 00 a.m. to 5 : 30 p.m.). This demarcation line passes through the border of West Bengal and Assam and has a narrow spatial extension, which makes it easier to implement from the railways point of view. Once approved, the implementation would require establishment of a laboratory for 'Primary Time Ensemble - II' generating IST-II in any of the north-eastern states, which would be equivalent to the existing 'Primary Time Ensemble-I' at CSIR-NPL, New Delhi.

Item Type: Article
Additional Information: Copyright for this article belongs to M/s Indian Academy of Sciences.
Subjects: Materials Science
Depositing User: Mr. Yogesh Joshi
Date Deposited: 22 Aug 2019 08:17
Last Modified: 22 Aug 2019 08:17

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