As nouns the difference between downtime and dawntime
is that downtime is the amount of time lost due to forces beyond one's control, as with a computer crash while dawntime is the time of dawn.
downtime
English
Noun
(
en noun)
The amount of time lost due to forces beyond one's control, as with a computer crash.
A break or rest from work; leisure time.
- I've been working all weekend. I need some downtime .
dawntime
English
Noun
(-)
The time of dawn
(figuratively) The time when something is just beginning