nightfall
Dawn is also known as daybreak, the first light of day before sunrise.
sunrise Answer: Dawn.
Daybreak
The opposite of known is unknown.
Opposite sides are equal in length. Opposite angles are equal. It is also known as a parallelogram.
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A negative also known as "Nay," while a positive vote is known as "Yay"
The first ray of light at sunrise is commonly referred to as the "first light" or the "dawn light." It is also known as the "first light of day" or "daybreak."
The opposite of doubling a number is halving it. This is also known as multiplying by 1/2 or .5 or dividing by 2.
The sole of the foot is also referred to as the plantar aspect. The opposite side is usually called the top of the foot, or the dorsal aspect.
Daybreak in Udi was created in 1949.
Apart from zero (which is its own opposite), the opposites of whole numbers are also whole numbers. You have the set of whole numbers which is also known as the set of integers.