Correct

单日

/ dānrì / 
Strokes

Definition

on a single day

Example

As a Noun

odd-numbered day (of the month)

1
Zhè
这
xiǎozhèn
小镇
féng
逢
dānrì
单日
yǒu
有
jí
集
  
。

There is a fair on odd-numbered days in this small town.