It is very common in English to use nouns as adverbs, especially when
used to establish time. Here are some examples off the top of my
He slept 12 hours. ("12 hours" is a noun phrase functioning as an
I'm going home tomorrow. (Both home and tomorrow are nouns
functioning as adverbs.)
The Eagles lost Tuesday. ("Tuesday" functions as an adverb.)
We met yesterday. ("Yesterday" acts as an adverb.)
I punched him 16 times. ("16 times" functions as an adverb.)
The one time I looked he wasn't there. ("The one time I looked" is a
noun phrase functioning as an adverb.)
Note that in all of these cases a noun (one that would normally be
used in the nominative) is doing the job of an adverb. I haven't
thought this through completely, put it appears that when nouns
function as adverbs they
usually are placed at the beginning or end of the sentence.
Here are some Web references to the use of nouns as adverbs:
What Is a Noun?
"A noun can function in a sentence as a subject, a direct object, an
indirect object, a subject complement, an object complement, an
appositive, an adjective or an adverb."
Instructional Systems: Traditional English Grammar
"Sometimes a noun is used as an adverb. This noun is called an
"We went home early. (Home tells where.)
"The fish weighed ten pounds. (Ten pounds tells how much.)
"The contest will end Friday. (Friday tells when.)"
"Many nouns can actually be adverbs. For example, if we look at this
"I went downtown yesterday.
"and we try to figure out what part of speech downtown is, we might
say that it is a noun, but it is in fact an adverb."
"Adverbial nouns act as adverbs by indicating distance, time, weight,
or value. Adverbial nouns are sometimes called adverbial objectives.
"The large cat might weigh twenty pounds."
"Nouns as Adverbs
"A noun may also function as an adverb. The noun-as-adverb functions
to modify or qualify a verb, adjective, or another adverb. A
noun-as-adverb will qualify the word it modifies by answering When?
Where? Why? Under What Condition? or To What Degree? an action occurs
or a situation exists. These modifiers typically appear anywhere in a
sentence, often some distance from the word they modify. Frequently
their position within a sentence can be changed without disrupting the
sense of the sentence. (Contrast the mobility of nouns-as-adverbs with
the fixed position of noun-adjectives.)
"...We went to the market Friday. (We went when? Friday)
"Let's meet tomorrow at the same time. (Meet when? Tomorrow)"
Nouns Used as Adverbs
"Some nouns function as adverbs, usually to indicate a spatial or
"Adverbial objectives or adverbial nouns are nouns used as adverbs.
They usually tell amount, weight, time, distance, direction or value.
They can have adjectives modifying them. Example: He waited two days."
I hope this fully answers your question.
This answer was based on personal knowledge (I have spent 25 years as
a professional writer and/or editor) and research that included these
Google search terms:
"nouns functioning as adverbs"
"nouns used as adverbs"