diff --git a/quartz.config.ts b/quartz.config.ts
index e96ee4843..18f32c309 100644
--- a/quartz.config.ts
+++ b/quartz.config.ts
@@ -18,7 +18,7 @@ const config: QuartzConfig = {
     locale: "en-US",
     baseUrl: "quartz.jzhao.xyz",
     ignorePatterns: ["private", "templates", ".obsidian"],
-    defaultDateType: "created",
+    defaultDateType: "modified",
     theme: {
       fontOrigin: "googleFonts",
       cdnCaching: true,
diff --git a/quartz/plugins/transformers/lastmod.ts b/quartz/plugins/transformers/lastmod.ts
index fe8c01bcf..1a837a4c5 100644
--- a/quartz/plugins/transformers/lastmod.ts
+++ b/quartz/plugins/transformers/lastmod.ts
@@ -48,10 +48,10 @@ export const CreatedModifiedDate: QuartzTransformerPlugin<Partial<Options>> = (u
                 created ||= st.birthtimeMs
                 modified ||= st.mtimeMs
               } else if (source === "frontmatter" && file.data.frontmatter) {
-                created ||= file.data.frontmatter.date as MaybeDate
+                created ||= file.data.frontmatter["date created"] as MaybeDate
                 modified ||= file.data.frontmatter.lastmod as MaybeDate
                 modified ||= file.data.frontmatter.updated as MaybeDate
-                modified ||= file.data.frontmatter["last-modified"] as MaybeDate
+                modified ||= file.data.frontmatter["date modified"] as MaybeDate
                 published ||= file.data.frontmatter.publishDate as MaybeDate
               } else if (source === "git") {
                 if (!repo) {