Zero Shadow Day happened in Bengaluru at 12.17 p.m. on April 25. On this day, the Sun will be directly overhead and hence any vertical object will not cast a shadow.
As per the Astronomical Society of India, this annual celestial phenomenon occurs twice a year for places between +23.5 and -23.5 degrees latitude. The Sun is almost never exactly overhead at noon but usually transits a bit lower in altitude, a bit to the north or a bit to the south.
