How does Sikhi differ to Christianity’s explanation of the creation of the Universe?

The Bible states:
“In the beginning God created heaven and earth… let there be light… let there be a firmament… let the dry land appear… let the waters bring forth life… Let the earth bring forth grass… let the earth bring forth the living creature after His kind. And the evening and the morning were created the sixth day. He rested on the seventh day and blessed and sanctified it”. (Genesis 1,1-31)

The chronology goes like this:-
First day: creation of (one) heaven and (one) earth
Second day: Firmament created.
Third day: Vegetation created.
Fourth day: Sun, Moon and the stars created.
Fifth day: Water, marine life and birds.
Sixth day: Insects, animals and humans created.
Seventh day: God rested.

“The firmament separated the waters above and the waters below”. (Gen1:7)
According to this schedule the days existed before the sun came into existence. The earth existed before the sun and the stars. There was vegetation without sun and water. Birds were created before the reptiles. Humans were created after everything else. Modern astronomers, biologists, geologists, and scientists see it differently.

THE SIKH VIEW

According to the Sikh faith God created the Universe instantaneously.
ਕੀਤਾ ਪਸਾਉ ਏਕੋ ਕਵਾਉ ॥
“You created the vast expanse of the Universe with One Word!”
(Ang 3)

God created countless planets, countless heavens, countless skies, and countless universes:
ਕੋਟਿ ਬ੍ਰਹਮੰਡ ਕੋ ਠਾਕੁਰੁ ਸੁਆਮੀ ਸਰਬ ਜੀਆ ਕਾ ਦਾਤਾ ਰੇ ॥
“God is the Lord and Master of millions of universes; He is the Giver of all beings.”
(Ang 612)

The Sikhs believe that the world is an efflux from God. It is a manifestation of His creative spirit (ੴ Ek Oankaar) through His creative Will (Kavaao). Before time began to run its course only God existed. Then He willed the creation of the Universe.
ਜਾ ਤਿਸੁ ਭਾਵੈ ਤਾ ਸ੍ਰਿਸਟਿ ਉਪਾਏ ॥ ਆਪਨੈ ਭਾਣੈ ਲਏ ਸਮਾਏ ॥
“When it pleases Him, He creates the world. As He pleases, He absorbs it back into Himself.”
(Ang 292)

Sri Guru Granth Sahib Ji tells us how the Will of the Almighty revealed and manifested (which some would call ‘evolution of the world’)
ਸਾਚੇ ਤੇ ਪਵਨਾ ਭਇਆ ਪਵਨੈ ਤੇ ਜਲੁ ਹੋਇ ॥
ਜਲ ਤੇ ਤ੍ਰਿਭਵਣੁ ਸਾਜਿਆ ਘਟਿ ਘਟਿ ਜੋਤਿ ਸਮੋਇ ॥
“The True Lord created air (gases) which combined to form liquids (water =Hydrogen +Oxygen). The liquids brought forth the creation. The Lord established Himself as a spark in it.”
(Ang 19)

As for the time and date of its creation, Guru Ji says:-
ਥਿਤਿ ਵਾਰੁ ਨਾ ਜੋਗੀ ਜਾਣੈ ਰੁਤਿ ਮਾਹੁ ਨਾ ਕੋਈ ॥
ਜਾ ਕਰਤਾ ਸਿਰਠੀ ਕਉ ਸਾਜੇ ਆਪੇ ਜਾਣੈ ਸੋਈ ॥
“The day and the date are not known to the Yogis, nor is the month or the season. The Creator who created this creation-only He Himself knows.”
(Ang 4)

Pinpointing the day of creation is meaningless in relation to the universe or creation. The universe does not have a day everywhere at the same time. Even on our own planet a “day” is not the same everywhere. When there is night in the West, the East basks in the sun. When there is night in the West, the East basks in the sun.