Are calendars allowed to mark their own birthdate? Sure, if you consider the case of ‘Kalnirnay’. On October 7, when the Mumbai-bred calendar-cum-almanac that has alerted generations of housewives, farmers, pandits and butchers to planetary alignments and ‘shubh muhurats’–entered its 50th year, third-generation inheritor Shakti Salgaonkar celebrated the “humbling” occasion in a tweet timed right after the auspicious launch of