Looking on the internet deeply has found these results:

twice a month is the most popular phrase on the web.

two time a month 11,330,000 results on the web	twice a month 149,200,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
Green's here about two or three times a month... and he's busy with real estate deals. Works 60 hours a week or more, and two to three times a month he goes out with the teams on raids. He plays golf two or three times a month. ONE TIME, TWO TIME A MONTH, BUT PING MEI SAY SHE TELL CHRIS SHE SEE HIM NO MORE. He goes over his books two or three times a month. Used to be two, three times a month. They sell American clothes but just two times a month.	And twice a month we spend the weekends together. The committee meets twice a month. Went to the movies twice a month. I'll come twice a month and practice a lot. Sofia cannot take a six Found out he had groceries delivered twice a month from the bodega. Excuse me, but you're 32 years old... you can't appear more than twice a month, and it's exhausting. She only left the apartment twice a month for years.

two time a month

11,330,000 results on the web

twice a month

149,200,000 results on the web

More popular!

Green's here about two or three times a month... and he's busy with real estate deals.
Works 60 hours a week or more, and two to three times a month he goes out with the teams on raids.
He plays golf two or three times a month.
ONE TIME, TWO TIME A MONTH, BUT PING
MEI SAY SHE TELL CHRIS SHE SEE HIM NO MORE.
He goes over his books two or three times a month.
Used to be two, three times a month.
They sell American clothes but just two times a month.

And twice a month we spend the weekends together.
The committee meets twice a month.
Went to the movies twice a month.
I'll come twice a month and practice a lot.
Sofia cannot take a six
Found out he had groceries delivered twice a month from the bodega.
Excuse me, but you're 32 years old... you can't appear more than twice a month, and it's exhausting.
She only left the apartment twice a month for years.