Announcement reposted from Amazon Japan:
Seller Central defines a day that falls on a national holiday. Holidays are not counted as business days when estimating shipping and delivery dates. Therefore, if the estimated ship date or delivery date falls on a holiday, the ship date or delivery date will be set to the business day following that holiday. To see details, go to Manage Holiday Settings.
The following period has been added as Obon this year to the holiday settings in Cellar Central. The added period is from Tuesday, August 13, 2024 to Friday, August 16, 2024.
If you want to continue shipping during the above Obon period, you have to set the holiday as a business day. To access holiday settings, go to Shipping Settings, click General Shipping Settings, and click Edit on Holidays.