Region’s setting metallic alloy, oxygenated? (5,4)
I believe the answer is:
local time
'region's' is the definition.
Although both the answer and definition are singular nouns, I cannot see how they can define each other.
I cannot understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for local time that I've seen before include "What the clock says where you are" , "The hour at home as opposed to internationally" , "the appointed hour to a particular place" , "You can set your watch by this" .)