[Translation from Japanese to Native English ] Of note was was the cosmic calendar showing the 13.7 billion year history of ...

Additional info

Good writing skill is required.
We would like to offer more this kind of requests in the near future, therefore we would like to see if there are translators who have some knowledge about astronomy.

Original text

見どころは、137億年の宇宙の歴史を1年の暦にたとえた宇宙暦。
ビッグバンから始まり、
桜散る4月半ばに天の川銀河ができ、
夏の暑さがまだ残る9月には太陽系ができました。
そして人類が誕生したのは？

宇宙の時の流れを身近な時間に置きかえてみれば、
人の一生はほんの一瞬です。

Translation / English

Of note was was the cosmic calendar showing the 13.7 billion year history of the universe as a single year.
Starting with the big bang, the Milky Way formed in April when flowers bloom, and our solar system formed when summer's heat still remains in August.
So when did humans first appear?

Looking at the cosmic flow of time from a point of view a little closer to home, the existence of humanity is just an instant.

Translation / English

A highlight would be of the metaphor of comparing the 13 billion 7 million years of space history to a span of 1 year.
Starting from the Big Bang, the milky way galaxy forms its shape when the cherry blossoms fall in mid April,
and the Solar System is created in around September, while the summer's temperature still remains.
When do humans appear?

When placing the stream of time of the universe to a familiar frame,
the life of humans is only a fragment of a spark.