If all of life's history (3.7 billion years) were the days of the year, then the following events would happen at
Earth forms.
Moon forms from fragments of Earth.
Tidal locking causes one side of the moon to face the Earth permenatly.
Earth's original hydrogen and helium atmosphere escapes Earth's gravity.
Earth's atmosphere becomes mostly carbon dioxide, water vapor, methane, and ammonia.
The eon of the first multicelled life.
First known animals.
The era of ocean life land animals appear toward the end of this era.
Era of reptiles, sometimes called the "age of the dinosaurs"
First Birds.
Climate warmer than at present, with sea level higher
Flowering plants appear and spread rapidly.
Era of mammals
Mountains building in Europe and Aisa.
Began with extinction of the dinosaurs.
Whales and monkeys forst appear in the fossil record.
Elephants and apes first appear in the fossil record.
Hominids first appear in the fossil record.
The modern ice age; first modern humans appear