diff --git a/README.md b/README.md
index d091495..eecd524 100644
--- a/README.md
+++ b/README.md
@@ -12,6 +12,8 @@ export ROSCONSOLE_FORMAT='[${severity}] [${time}] [${node}] [${logger}]: ${messa
 failed-to-fetch-binary-armhf-packages-error-
 ```sudo dpkg --remove-architecture armhf```
 
+# sync time over ssh
+ssh user@server sudo date -s @`( date -u +"%s.%N")`
 
 
 # IPs