diff --git a/README.md b/README.md
index 97cad41..e15e22b 100644
--- a/README.md
+++ b/README.md
@@ -1,12 +1,14 @@
-# since - calcuate time since rfc3339 timestamp
+# since - calcuate time since
 
-This is a rewrite of the `since` bash script into rust. First draft, kinda bad,
-made on an airplane without wifi.
+This is a rewrite of the `since` bash script into rust. 
 
 ### usage
 
-For now, only entry as rfc3339 timestamp is supported.
+Enter a timestamp in `<hh:mm:ss>` and `<yyyy-mm-dd hh:mm:ss>` as well as RFC 3339
+timestamp.
 
 ```bash
-cargo run -- "2014-11-28T12:00:09Z"
+since "2014-11-28T12:00:09Z"
+since "2014-11-28 12:00:09"
+since "12:00:09"
 ```