A lunar eclipse happens only on a full moon day when the Earth comes directly between the Sun and the Moon, casting its shadow on the Moon.

১. A solar eclipse occurs on a new moon day, while a lunar eclipse requires a full moon.
২. It cannot occur on a half-moon or moonless day due to the necessary geometric alignment.
৩. During a total lunar eclipse, the Moon often appears reddish, a phenomenon known as the ‘Blood Moon’.

অতিরিক্ত তথ্য: A lunar eclipse can be seen from any place on the night side of the Earth.