on time vs timely

on time and timely both are adjectives.

Word	Noun	Adjective	Verb	Adverb
on time	No	Yes	No	Yes
timely	No	Yes	No	Yes

on time (adjective)	timely (adjective)
acting or arriving or performed exactly at the time appointed	done or happening at the appropriate or proper time
payable in installments within a designated period of time	before a time limit expires

on time (adverb)	timely (adverb)
at the expected or proper time	at an opportune time