six traditional calendar labels; rokuyo
Refers to the six labels (先勝, 友引, 先負, 仏滅, 大安, 赤口) used in Japanese calendars to indicate the auspiciousness of a day. Often encountered in the context of scheduling events like weddings or funerals.
See also: 六曜
Many people decide the wedding date by referring to the rokuyo.
The rokuyo are printed on the calendar.