After the 10th day of the first lunar month calendar, people begin to celebrate Yuanxiao festival.

农历正月初十过后，人们便开始准备庆祝元宵节的活动。

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No longer will I set goals for a 12 month calendar year; my "12 Week year" starts today and it ends on March 28th.

我再也不会为十二个月一年的日历年设立目标，我的“十二周一年”从今天开始并会在三月二十八号结束。

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In the Chinese calendar, the Spring Equinox always occurs in the second month.

在中国历法中，春分总是出现在二月份。

《柯林斯英汉双解大词典》

We'd look over 4-month calendar.

我们会看整个四个月。

普林斯顿公开课 - 国际座谈会课程节选

Yes, this does mean that one seventh of humanity hit a Google web page in just that one calendar month.

FORBES: Google Hits One Billion Visitors in Only One Month

If the whole account is down 3% in the first week of a calendar month, he closes his positions and waits until the next month to resume trading.

FORBES: When the Markets Sleep

To encourage companies to sign on for a range of tasks, it gives bulk discounts to those that run at least two campaigns in the same calendar month.

FORBES: $240 To Place Story On Digg Front Page: One Marketing Firm's Pitch