decêmbra♦♦♦ prisl. in December
konec decembra ali ob koncu decembra at the end of December
sredi decembra in mid-December
[8., 20.] decembra on December [8th, 20th], on the [8th, 20th] of December
decembra lani last December, in December (of) last year
decembra letos this December, in December (of) this year