diff --git a/static/index.js b/static/index.js
index ca4bbf4..c7cea0d 100644
--- a/static/index.js
+++ b/static/index.js
@@ -99,6 +99,19 @@ function make_table(url) {
         "Venerdì",
         "Sabato",
       ];
+      let thead = document.createElement("thead");
+      let tr = document.createElement("tr");
+      let th = document.createElement("th");
+      th.scope = "col";
+      tr.appendChild(th);
+      for (let i = 0; i < columns; i++) {
+        let th = document.createElement("th");
+        th.scope = "col";
+        th.textContent = i + 1;
+        tr.appendChild(th);
+      }
+      thead.appendChild(tr);
+      table.appendChild(thead);
       week.forEach((weekday) => {
         let tr = document.createElement("tr");
         let th = document.createElement("th");