diff --git a/readme.md b/readme.md
index 121ddd1..6026b49 100644
--- a/readme.md
+++ b/readme.md
@@ -216,8 +216,9 @@ date +%m/%d/%Y
 
 What about a week from now?
 
-```
-date -d "+7 days"
+```bash
+date -d "+7 days"                            # On linux
+date -j -v+7d                                # On osx
 ```
 
 ===