LPS-68909, date format was properly fixed for Japanese.
However, there's a small issue in Week view, where the day format is not properly localized.
Steps to reproduce
- Start a clean bundle
- Place Calendar into home page
- Set Calendar to display Week view
- Switch to Japanese display language
Day is displayed as "金 6"
Day is displayed as "6（金）".
Proper format is "%d日（%A）" (no padding)