How long specifically has Chief been in Cyro?

Games Other Halo
1

Alright so my question is how long has Chief been in Cyro sleep? Like is there any more specific information then “5 Years”?

2

Four years, seven months and ten days.

3

“Cryo” not “Cyro”

4

Until Cortana needed him.

5

until he needed to take a dump.