mornings
The longest day of the year is called the summer solstice. It marks the official beginning of summer in the Northern Hemisphere.
The invasion of Europe was operationally called Operation Overlord. (D-Day is the beginning day of all battles)
beginning of the leaves called embryo
Rivers run from the source, or head, to the mouth of the river where it empties into a larger body of water, be it another larger river, or an ocean, or a sea.
Sunrise is generally considered the beginning of the day.
The beginning of menstruation is called
The Beginning of the Constitution is called the Preamble.
The source or beginning of a river is called the 'headwater'. The beginning of a river is known as the source.
It was first called Macy's Christmas Parade because it signified the beginning of the Christmas shopping season.
It is called the 'Office of Lauds'. Its title comes from giving praise (laud) to God at the beginning of a new day.
The beginning of menstruation is menarche.
The word for "beginning" in Latin is principium, so "I am the beginning" is Principium sum.