diff --git a/ServerOptions.go b/ServerOptions.go
index 290365f..b82d790 100644
--- a/ServerOptions.go
+++ b/ServerOptions.go
@@ -24,7 +24,7 @@ func DefaultOptions() *ServerOptions {
 		ExpectBaseURL:        "/",
 		DefaultPage:          "home",
 		Timezone:             "UTC",
-		DateFormat:           time.RFC822Z,
+		DateFormat:           time.RFC3339,
 		DBFilePath:           "wiki.db",
 		FaviconFilePath:      "", // no favicon
 		AllowDBDownload:      true,