diff --git a/src/lib/strings/time.ts b/src/lib/strings/time.ts
index 4f62eeba99..8357d3c314 100644
--- a/src/lib/strings/time.ts
+++ b/src/lib/strings/time.ts
@@ -1,7 +1,7 @@
 const MINUTE = 60
 const HOUR = MINUTE * 60
 const DAY = HOUR * 24
-const MONTH = DAY * 30
+const MONTH = DAY * 28
 const YEAR = DAY * 365
 export function ago(date: number | string | Date): string {
   let ts: number