Correct

一月

/ yīyuè / 
Strokes

Definition

January/first month (of the lunar year)

Example

As a Noun

January (Jan)

1
Yī
一
yuè
月
zhōngxún
中旬

mid-January

2
Yī
一
yuè
月
yī
一
rì
日

the first of January

3
Yī
一
yuè
月
shí
十
rì
日

(on) 10th January; (on) January 10th

4
Yī
一
yuè
月
dào
到
wǔ
五
yuè
月

from January to May

As a Noun

first month of the lunar year; first moon

As a Noun

a month