The Earth and Sun came into existence 9.2 Billion years after the Universe began. Gods FIRST DAY was not designed around something that did not exist.
—Hebrew Word Study (Transliteration-Pronunciation Etymology & Grammar)
#3117 יוֹם yowm {yome} from an unused root
meaning to be hot; TWOT - 852; n m
—Brown-Driver-Briggs (Old Testament Hebrew-English Lexicon)
1) day, time, year
1a) day (as opposed to night)
1b) day (24 hour period)
1b1)
as defined by evening and morning in Genesis 1
1b2) as a division of time
1b2a) a working day, a day's journey
1c) days,
lifetime (pl.)
1d) time, period (general)
1e) year
—Strong's (Hebrew & Chaldee Dictionary of the Old Testament)
From an unused root meaning to
be hot; a
day (as the
warm hours), whether literally (from sunrise to sunset, or from one sunset to the next), or
figuratively (a space of time defined by an associated term), (often used adverbially):—
age, + always, +
chronicles, continually (-ance), daily, ([birth-], each, to) day, (now a, two) days (agone), + elder, X end, + evening, + (for)
ever (-lasting, -more), X
full, life, as (so) long as (. . . live), (even) now, + old, + outlived, +
perpetually, presently, + remaineth, X required,
season,
X since, space, then,
(process of) time, + as at other times, + in trouble, weather, (as) when, (a, the, within a) while (that),
X whole (+ age), (full) year (-ly), + younger.
Times Yom is used in the Bible
—Exhaustive Concordance (KJV Translation Frequency & Location)
AV - day 2008,
time 64,
chronicles + H1697 37, daily 32,
ever 17,
year 14,
continually 10, when 10, as 10, while 8,
full 8
always 4,
whole 4,
alway 4, misc 44; Total = 2274
The Universe is not 6000 years old, and God did not tell us He created the Universe in 6 Days. As is pointed out above, the word YOM has man different meanings. We understand there was TOTAL DARKNESS for the first 400 Million years, hence the second verse says " and there was DARKNESS on the face of the Deep. This is why Evening comes before Morning, the Stars first started forming at the 400 Million year Mark.
It is not Gods fault we do not understand YOM has about 50 different meanings, it is our because we try to put God in a corner. He told us the Creation from His viewpoint, not ours of course.