calendar month
Year's twelfth part
A calendar month is any of the twelve named divisions of the year—January through December—as opposed to a lunar month or a period of exactly thirty days.
Legal and financial contexts often specify calendar month to clarify that a deadline falls at month's end rather than thirty days from a given date: Payment is due within one calendar month of invoice date.
- MarchYear's third month
- AprilYear's fourth month
- DecemberYear's final month
- FebruarySecond month, often shortest
- dateSpecific day or outing
due date · January · fiscal year · Metonic cycle · November · thirty days · intercalation · calendrical · solstice · May · June · birthday · days · billing · monthly bill · rent · pay period · quarterly