R-1271 (P2): „use my kept data” never takes a copy dated in the future — a copy more than 10 minutes past the box's clock never counts as the newest (the newest true date wins, tie local); alone it is still offered, said and not recommended. Red-proved. Commit only.

controller/internal/i18n/locales/en.json

@@ -2864,5 +2864,7 @@
   "err.backup.restore_not_started": "%s: we loaded the data back, but the app has not started yet. Wait a few minutes, then open it again. If it stays like this, tell us.",
   "note.restore.late_started": "%s has started: the restore is done.",
   "err.backup.restore_image_gone": "The version of this backup (%s) cannot be downloaded: its maker no longer offers it. We did not touch the app. Choose another backup.",
-  "err.backup.restore_image_unreachable": "The version of this backup (%s) cannot be downloaded right now, so we did not touch the app. Try again later, or choose another backup."
+  "err.backup.restore_image_unreachable": "The version of this backup (%s) cannot be downloaded right now, so we did not touch the app. Try again later, or choose another backup.",
+  "kept.backup.future_note": "(its date is in the future — the clock of the box that made it may have been wrong)",
+  "kept.choice.use.future": "Note: the date of this backup (%s) is in the future. The clock of the box that made it may have been wrong. Choose it only if you are sure it is your backup."
 }