diff --git a/guide/english/javascript/get-timestamp/index.md b/guide/english/javascript/get-timestamp/index.md
index 44a3504897..c9000aa1e3 100644
--- a/guide/english/javascript/get-timestamp/index.md
+++ b/guide/english/javascript/get-timestamp/index.md
@@ -6,3 +6,5 @@ You can use `Date.now()` to get the current timestamp in milliseconds.
 You can easily convert the timestamp to seconds like this: `Math.floor(Date.now() / 1000)`
 
 If your browser does not support `Date.now()`, you can use `new Date().getTime()` to get the timestamp in milliseconds.
+
+Unix Timestamp is number of seconds elapsed since 01/01/1970, 00:00:00 UTC. The Unix timestamp will break on 01/19/2038.