diff --git a/spec/09-b-cqlreference.adoc b/spec/09-b-cqlreference.adoc
index 26ace60..3befd6e 100644
--- a/spec/09-b-cqlreference.adoc
+++ b/spec/09-b-cqlreference.adoc
@@ -917,9 +917,9 @@ The [.id]#ToDate# operator converts the value of its argument to a [.id]#Date# v
 
 For the DateTime overload, the operator is equivalent to invoking [.kw]#date from# on the DateTime value.
 
-For the String overload, the operator expects the string to be formatted using the ISO-8601 date representation:
+For the string overload, the operator expects the string to be formatted using the ISO-8601 datetime representation:
 
-YYYY-MM-DD
+YYYY-MM-DDThh:mm:ss.fff(+|-)hh:mm or YYYY-MM-DDThh:mm:ss.fffZ
 
 In addition, the string must be interpretable as a valid date value.