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NOW DEEPER
ORIGIN 1.3.1
Time Calculations
Extremely long periods of time are very difficult to comprehend, so here the whole history of the world thus far is shrunk proportionately into a single 24-hour day.
Humans came in just the last second!!

12:00 AM / Big Bang

In this model, we compress proportionately all of time since creation into a single day. The universe is approximately 13.8 billion years old.

13,800,000,000 / 24 = 575,000,000

Thus, one hour of model time equals 575 million years of actual time.

Time starts 12:00 AM with the Big Bang [see Origin 1.1].

4:10 PM / Earth cooled

The earth is approximately 4.5 billion years old. Therefore, cooling and solidifying took approximately 9.3 billion years (13.8 - 4.5 = 9.3).

> 9,300,000,000 / 575,000,000 = 16.174 hours in model time

Thus, in model time (everything compressed proportionately to one day), it took until 4:10 in the afternoon for the cooling gasses and dust to compress to form earth's solid crust covered with water and life-sustaining atmosphere.

5:00 PM / Organic life

The first organic life on earth appeared approximately 4 billion years ago (13.8 - 4.0 = 9.8).

> 9,800,000,000 / 575,000,000 = 17.043 hours in model time

Thus, in model time (everything compressed proportionately to one day), it was about 5:00 in the afternoon when simple forms of organic life appeared in the sea and on land.

11:08 PM / Fish and birds

The first fish on earth appeared approximately 500 million years ago (13.8 - .5 = 13.3), followed next by birds.

> 13,300,000,000 / 575,000,000 = 23.130 hours in model time

Thus, in model time (everything compressed proportionately to one day), it was about 11:08 in the evening when fish appeared.

11:23 PM / Dinosaurs

Dinosaurs first appeared on earth about 250 million years ago (13.8 - .25 = 13.55).

>13,550,000,000 / 575,000,000 = 23.565 hours in model time

Thus, in model time (everything compressed proportionately to one day), it was about 11:23 in the evening when dinosaurs appeared on earth.

Large birds died with the dinosaurs in the mass extinction sixty-six million years ago (which killed three-fourths of all species on earth), but modern birds are small surviving avian dinosaurs.

11:39 PM / Mammals

Mammals first appeared on earth about 200 million years ago (13.8 - .20 = 13.6).

>13,600,000,000 / 575,000,000 = 23.652 hours in model time

Thus, in model time (everything compressed proportionately to one day), it was about 11:39 in the evening when mammals appeared on earth and some life began reproduction by live births instead of eggs.

11:59:58 PM / Hominins

Hominins first appeared on earth about two million years ago.

> 13,798,000,000 / 575,000,000 = 23.997 hours in model time

Thus, in model time (everything compressed proportionately to one day), it was about 11:59:58 in the evening when hominins appeared on earth.

11:59:59 PM / Humans

Humans (as distinguished from hominins) first appeared on earth approximately 20,000 - 40,000 years ago.

> 13,799,970,000 / 575,000,000 = 23.99995 hours in model time

Thus, in model time (all time so far compressed proportionately into a single 24-hour period), it was about 11:59:59 in the evening one second ago! – when humans appeared on earth!

A mere blink-of-the-eye in God's timing!!
Dating methods
See Origin 1.3.4 for description of scientific dating methods and huge advances made in the past 40 years.