@@ -49,6 +49,10 @@ func makeRange(lhs *gentypes.FieldType, op lex.TokenType, rhs expr.Node) (any, e
 				// rhsval can be converted to a float!
 				rhsval = rhsf
 			}
+			// ISO date string → epoch millis float.
+			if t, err := dateparse.ParseAny(rhsstr); err == nil {
+				rhsval = float64(t.UnixMilli())
+			}
 		}
 	}
Original file line number	Diff line number	Diff line change
`@@ -49,6 +49,10 @@ func makeRange(lhs *gentypes.FieldType, op lex.TokenType, rhs expr.Node) (any, e`
`49`	`49`	`// rhsval can be converted to a float!`
`50`	`50`	`rhsval = rhsf`
`51`	`51`	`}`
	`52`	`+ // ISO date string → epoch millis float.`
	`53`	`+ if t, err := dateparse.ParseAny(rhsstr); err == nil {`
	`54`	`+ rhsval = float64(t.UnixMilli())`
	`55`	`+ }`
`52`	`56`	`}`
`53`	`57`	`}`
`54`	`58`