The date is automatically displayed in the same languages as you have set on your watch and phone device, this is the default behavior.
If the date is in Japanese, it's because your devices are set to Japanese language.
Change it to English if you want the date to be displayed in English language.
最新情報
Update 1.10.1 for Wear OS: - Slightly adjusted Weekday indicator length for a better fit - Added support for API level 33
Update 1.8.1 for Wear OS: - Full integration with Google’s “Watch Face Format” - Added “AOD Cover” option - Customizable Always-on display - Date text now supports all language symbols - Minor “under the hood” optimization and polishing