noun
January 8-14
Refers to the seven-day period following the New Year's Matsu-no-uchi (January 1-7), specifically January 8 through 14. Used in traditional contexts.
後七日は、正月の松の内が明けた後の一週間を指します。
Go-shichinichi refers to the week after the New Year's Matsu-no-uchi period ends.