Acts 11:26 καὶ εὑρὼν ἤγαγεν εἰς Ἀντιόχειαν. ἐγένετο δὲ αὐτοῖς καὶ ἐνιαυτὸν ὅλον συναχθῆναι ἐν τῇ ἐκκλησίᾳ καὶ διδάξαι ὄχλον ἱκανόν, χρηματίσαι τε πρώτως ἐν Ἀντιοχείᾳ τοὺς μαθητὰς Χριστιανούς.
When he had found him, he brought him to Antioch. It happened, that for a whole year they were gathered together with the assembly, and taught many people. The disciples were first called Christians in Antioch.
Noun: Accusative Singular Masculine

Acts 18:11 ἐκάθισεν δὲ ἐνιαυτὸν καὶ μῆνας ἓξ διδάσκων ἐν αὐτοῖς τὸν λόγον τοῦ θεοῦ.
He lived there a year and six months, teaching the word of God among them.
Noun: Accusative Singular Masculine

Hebrews 9:25 οὐδ' ἵνα πολλάκις προσφέρῃ ἑαυτόν, ὥσπερ ὁ ἀρχιερεὺς εἰσέρχεται εἰς τὰ ἅγια κατ' ἐνιαυτὸν ἐν αἵματι ἀλλοτρίῳ,
nor yet that he should offer himself often, as the high priest enters into the holy place year by year with blood not his own,
Noun: Accusative Singular Masculine

Hebrews 10:1 Σκιὰν γὰρ ἔχων ὁ νόμος τῶν μελλόντων ἀγαθῶν, οὐκ αὐτὴν τὴν εἰκόνα τῶν πραγμάτων, κατ' ἐνιαυτὸν ταῖς αὐταῖς θυσίαις ἃς προσφέρουσιν εἰς τὸ διηνεκὲς οὐδέποτε δύνανται / δύναται τοὺς προσερχομένους τελειῶσαι·
For the law, having a shadow of the good to come, not the very image of the things, can never with the same sacrifices year by year, which they offer continually, make perfect those who draw near.
Noun: Accusative Singular Masculine

Hebrews 10:3 ἀλλ' ἐν αὐταῖς ἀνάμνησις ἁμαρτιῶν κατ' ἐνιαυτόν·
But in those sacrifices there is a yearly reminder of sins.
Noun: Accusative Singular Masculine

James 4:13 ἄγε νῦν οἱ λέγοντες, σήμερον ἢ αὔριον πορευσόμεθα εἰς τήνδε τὴν πόλιν καὶ ποιήσομεν ἐκεῖ ἐνιαυτὸν καὶ ἐμπορευσόμεθα καὶ κερδήσομεν·
Come now, you who say, "Today or tomorrow let's go into this city, and spend a year there, trade, and make a profit."
Noun: Accusative Singular Masculine

Revelation 9:15 καὶ ἐλύθησαν οἱ τέσσαρες ἄγγελοι οἱ ἡτοιμασμένοι εἰς τὴν ὥραν καὶ ἡμέραν καὶ μῆνα καὶ ἐνιαυτόν, ἵνα ἀποκτείνωσιν τὸ τρίτον τῶν ἀνθρώπων.
The four angels were freed who had been prepared for that hour and day and month and year, so that they might kill one third of mankind.
Noun: Accusative Singular Masculine