diff --git a/README.md b/README.md
index eba83ae..534e20d 100644
--- a/README.md
+++ b/README.md
@@ -684,7 +684,9 @@ files, or for rotating when the log reaches a threshold size.
 "$number$scope" where "$scope" is one of "h" (hours), "d" (days), "w" (weeks),
 "m" (months), "y" (years). Or one of the following names can be used
 "hourly" (means 1h), "daily" (1d), "weekly" (1w), "monthly" (1m),
-"yearly" (1y). Rotation is done at the "start"</td>
+"yearly" (1y). Rotation is done at the start of the scope: top of the hour (h),
+midnight (d), start of Sunday (w), start of the 1st of the month (m),
+start of Jan 1st (y).</td>
 </tr>
 <tr>
 <td>count</td>