X-Git-Url: https://git.openstreetmap.org./rails.git/blobdiff_plain/35f0a0c4a7f1a75881240e101fceb9a754419c35..efc65b86a23032e7867314082f80e1da3654b51a:/app/assets/javascripts/heatmap.js

diff --git a/app/assets/javascripts/heatmap.js b/app/assets/javascripts/heatmap.js
index 058f71cfe..c557f96e3 100644
--- a/app/assets/javascripts/heatmap.js
+++ b/app/assets/javascripts/heatmap.js
@@ -33,7 +33,7 @@ document.addEventListener("DOMContentLoaded", () => {
         type: "month",
         gutter: 4,
         label: {
-          text: (timestamp) => monthNames[new Date(timestamp).getMonth() + 1],
+          text: (timestamp) => monthNames[new Date(timestamp).getUTCMonth() + 1],
           position: "top",
           textAlign: "middle"
         },