Work days : Monday through Friday
Bank Holidays : 1rst of January, Coming of Age Day - Seijin Shiki, 11th of February, Vernal Equinox Day, 29th of April, 3rd to 5th of May, Marine Day, 11th of August, Respect for the Aged Day, Autumnal Equinox Day, Health and Sports Day, Culture day, 23rd of November, Birthday of the Emperor.
Time zone : UTC +9
Capital : Tokyo
Main Cities : Tokyo, Yokohama, Osaka, Nagoya, Sapporo.
Country Code : ISO 3166-2:JP

VAT : 10%
Currency : Yen (JPY​)
Main Languages : Japanese
Primary carrier service postal : Japan Post

Don't forget that for the calculation of your delivery delays, bank holidays are not considered work days.