Greasy Fork is available in English.
Selecting Watching/Reading auto adds the start date, and Completed auto adds the finish date. Shows the actual Anime/Manga dates below the Anime/Manga image, that's updated every time you reload or click on Watching/Reading/Completed. Hover the mouse over the dates and click to reset them. This script adds 6 helpful buttons on the Anime/Manga Edit Details Page.
