diff --git a/db/migrations/20241103170751_calendar.php b/db/migrations/20241103170751_calendar.php
new file mode 100644
index 000000000..23abea59e
--- /dev/null
+++ b/db/migrations/20241103170751_calendar.php
@@ -0,0 +1,40 @@
+<?php
+declare(strict_types=1);
+
+use Phinx\Migration\AbstractMigration;
+
+final class Calendar extends AbstractMigration
+{
+    public function up(): void
+    {
+        if ($this->getEnvironment() == "thetool") {
+            $table = $this->table("Calendar", ["signed" => true]);
+            $table->addColumn("user_id", "integer", ["null" => false]);
+            $table->addColumn("go_calendar_id", "integer", ["null" => false]);
+            $table->addColumn("microsoft_id", "text", ["null" => false]);
+            $table->addColumn("rights", "text", ["null" => true]);
+            $table->addColumn("colors", "text", ["null" => true]);
+            $table->addColumn("groups", "text", ["null" => true]);
+            $table->addColumn("subscription_id", "text", ["null" => true]);
+            $table->addColumn("expirationDateTime", "integer", ["null" => true]);
+            $table->addColumn("active", "integer", ["null" => false, "default" => "1"]);
+            $table->addColumn("create_by", "integer", ["null" => false]);
+            $table->addColumn("edit_by", "integer", ["null" => false]);
+            $table->addColumn("create", "integer", ["null" => false]);
+            $table->addColumn("edit", "integer", ["null" => false]);
+            $table->save();
+        }
+
+        if ($this->getEnvironment() == "addressdb") {
+
+        }
+    }
+    public function down(): void
+    {
+        if ($this->getEnvironment() == "thetool") {
+            $this->table("Calendar")->drop()->save();
+        }
+        if ($this->getEnvironment() == "addressdb") {
+        }
+    }
+}