X-Git-Url: https://git.openstreetmap.org./rails.git/blobdiff_plain/bc88c730e212700ecef7e4589d451de975410b25..6ecfab90271916c806c91aff51b9e395529fcf4a:/app/assets/javascripts/heatmap.js

diff --git a/app/assets/javascripts/heatmap.js b/app/assets/javascripts/heatmap.js
index 2958da3b8..0670480d3 100644
--- a/app/assets/javascripts/heatmap.js
+++ b/app/assets/javascripts/heatmap.js
@@ -34,7 +34,7 @@ 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"
         },