<P> In June 2017, Department of Science and Technology (DST) indicated that they are once again studying feasibility of two time - zones for India . A proposal for both creating an additional Eastern India Timezone (EIT @ UTC + 6: 00) shifting default IST to UTC + 5: 00 and Day - light saving (IDT for IST and EID for EIT) starting on 14 April (Ambedkar Jayanti) and ending on 2 October (Gandhi Jayanti) was submitted to DST for consideration . </P> <P> Official time signals are generated by the Time and Frequency Standards Laboratory at the National Physical Laboratory in New Delhi, for both commercial and official use . The signals are based on atomic clocks and are synchronised with the worldwide system of clocks that support the Coordinated Universal Time . </P> <P> Features of the Time and Frequency Standards Laboratory include: </P> <Ul> <Li> High frequency broadcast service operating at 10 MHz under call sign ATA to synchronise the user clock within a millisecond; </Li> <Li> Indian National Satellite System satellite - based standard time and frequency broadcast service, which offers IST correct to ± 10 microsecond and frequency calibration of up to ± 10; and </Li> <Li> Time and frequency calibrations made with the help of pico - and nanoseconds time interval frequency counters and phase recorders . </Li> </Ul>

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