Rokuyo

🗓️ Rokuyo — Japan’s Six-Day Cycle

Rokuyo is a set of six labels from the Japanese lunisolar calendar — Senshō, Tomobiki, Senbu, Butsumetsu, Taian and Shakkō — that cycle in order. They have long been consulted when choosing dates for weddings and ceremonies.

Today · September 17, 2026

Tomobiki

友引

Lucky morning and evening, unlucky at noon

Rokuyo this month (September)

9/1 Tomobiki
9/2 Senbu
9/3 Butsumetsu
9/4 Taian
9/5 Shakkō
9/6 Senshō
9/7 Tomobiki
9/8 Senbu
9/9 Butsumetsu
9/10 Taian
9/11 Tomobiki
9/12 Senbu
9/13 Butsumetsu
9/14 Taian
9/15 Shakkō
9/16 Senshō
9/17 Tomobiki
9/18 Senbu
9/19 Butsumetsu
9/20 Taian
9/21 Shakkō
9/22 Senshō
9/23 Tomobiki
9/24 Senbu
9/25 Butsumetsu
9/26 Taian
9/27 Shakkō
9/28 Senshō
9/29 Tomobiki
9/30 Senbu

Upcoming Taian (lucky days)

Taian is considered the most auspicious Rokuyo day — often chosen for weddings, registrations and openings.

September 20 Sun
September 26 Sat
October 2 Fri
October 8 Thu
October 13 Tue
October 19 Mon
October 25 Sun
October 31 Sat

Look up any date

The six Rokuyo

Senshō 先勝 Morning is lucky; act early
Tomobiki 友引 Lucky morning and evening, unlucky at noon
Senbu 先負 Afternoon is lucky; stay calm
Butsumetsu 仏滅 Best to keep things low-key
Taian 大安 Lucky all day — the most auspicious
Shakkō 赤口 Lucky around noon only

What is Rokuyo?

Rokuyo is determined mechanically from the month and day of the Japanese lunisolar calendar; it spread on printed calendars from the Meiji era. This site derives the lunar date from the astronomically computed new moon and applies the traditional rule.

※ The notion of lucky and unlucky days is a custom, not a scientific claim. Enjoy it as one traditional guide among many. About our data