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Having just one time-zone costs India Rs 29,000 crore, finds study

Some countries such as the US and France have multiple time zones and DST

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Each evening, the sun sets more than 90 minutes later in western India than in the east of the country, yet the entire country follows the same time zone. Later sunset means people stay awake longer, which induces sleep deprivation among children and negatively affects their study efforts, a new study by a research scholar at Cornell University has found. As a result of sleeping late, children are less likely to complete primary and middle school, and this effect is most pronounced among poor households, says the study, ‘Poor Sleep: Sunset Time and Human Capital ...