diff --git a/README.md b/README.md
index 438b6c3..ae28302 100644
--- a/README.md
+++ b/README.md
@@ -1,15 +1,5 @@
 # github-style
 
-## 已知问题
-
-- 往年热力图起始点错误
-
-## TODO
-
-- 评论
-- 自定义菜单
-- 更多链接平台支持
-
 ## Init hugo site
 
 ```bash
diff --git a/static/js/github-style.js b/static/js/github-style.js
index 04a79b9..fc78658 100644
--- a/static/js/github-style.js
+++ b/static/js/github-style.js
@@ -173,12 +173,13 @@ function graph(year, posts, startDate, endDate) {
   }
   const monthPos = [];
   let startMonth = -1;
+  const weekday = startDate.getDay();
   for (let i = 0; i < 53; i++) {
     html += `<g transform="translate(${i * 16}, 0)">`;
     for (let j = 0; j < 7; j++) {
-      const date = new Date(startDate.getTime() + (i * 7 + j) * 24 * 60 * 60 * 1000);
+      const date = new Date(startDate.getTime() + (i * 7 + j - weekday) * 24 * 60 * 60 * 1000);
       const dataDate = `${date.getFullYear()}-${(date.getMonth() + 1).toString().padStart(2, '0')}-${date.getDate().toString().padStart(2, '0')}`;
-      if (date > endDate) {
+      if (date < startDate || date > endDate) {
         continue;
       }