diff -r 34716fd837a4 -r be944660c56a wp/wp-includes/blocks/calendar/block.json
--- a/wp/wp-includes/blocks/calendar/block.json	Tue Dec 15 15:52:01 2020 +0100
+++ b/wp/wp-includes/blocks/calendar/block.json	Wed Sep 21 18:19:35 2022 +0200
@@ -1,20 +1,12 @@
 {
+	"apiVersion": 2,
 	"name": "core/calendar",
+	"title": "Calendar",
 	"category": "widgets",
+	"description": "A calendar of your site’s posts.",
+	"keywords": [ "posts", "archive" ],
+	"textdomain": "default",
 	"attributes": {
-		"align": {
-			"type": "string",
-			"enum": [
-				"left",
-				"center",
-				"right",
-				"wide",
-				"full"
-			]
-		},
-		"className": {
-			"type": "string"
-		},
 		"month": {
 			"type": "integer"
 		},
@@ -24,5 +16,6 @@
 	},
 	"supports": {
 		"align": true
-	}
+	},
+	"style": "wp-block-calendar"
 }