Dhaka, June 21- People in Bangladesh witnessed a partial solar eclipse on Sunday, the longest day of the year. Dhaka residents witnessed the astronomical event starting at 11:30 am and lasting until 1:21 pm.
A solar eclipse occurs when a portion of the earth is engulfed in a shadow cast by the Moon which fully or partially blocks sunlight. This occurs when the sun, moon and earth are aligned.
Such alignment coincides with a new moon indicating the moon is closest to the ecliptic plane.
In a total eclipse, the disk of the Sun is fully obscured by the moon.
In partial and annular eclipses, only part of the Sun is obscured. – UNB
