We Chinese don't say 今月 but 这个月（this month).There is indeed 今年，今天 in Chinese language. Maybe thess are so called habitual expressions.

Dears; 思绪的呢喃&sylvia ...thanks so much!~ ~ ~

We say this month is 这个月rather than 今月

we don't say 今月 we say 这个月 zhe ge yue （this month）