impending vs at hand

impending and at hand both are adjectives.

Word	Noun	Adjective	Verb	Adverb
impending	No	Yes	No	No
at hand	No	Yes	No	No

As adjectives, impending and at hand are synonyms defined as:

Other synonyms of impending include close at hand, imminent, impendent.

impending (adjective)	at hand (adjective)
close in time; about to occur	close in time; about to occur
	close in space; within reach