Light oriental dish around noon, one without starter (8)
I believe the answer is:
Here is my best explanation:
'light' is the definition.
(sunshine is a kind of light)
'oriental dish around noon one without starter' is the subsidiary indication.
'oriental dish' becomes 'sushi'.
'around' is an insertion indicator.
'noon' becomes 'n'.
'without starter' means to remove the first letter.
'sushi' enclosing 'n' is 'sunshi'.
'one' with its first letter removed is 'ne'.
(Other definitions for sunshine that I've seen before include "Is she nun out in the fine weather", "Cock", "Brightness", "Ironic address (as of policeman to young offender)", "Solar rays", "Daily light and warmth", "''You are my ..., my only ...'' (song)", "In US hens is found this light", "that appears at dawn" and "term of address".)