diff --git a/src/main/java/com/ethlo/time/internal/token/TimeZoneOffsetToken.java b/src/main/java/com/ethlo/time/internal/token/TimeZoneOffsetToken.java
index 2e9bcf2..76a0cc3 100644
--- a/src/main/java/com/ethlo/time/internal/token/TimeZoneOffsetToken.java
+++ b/src/main/java/com/ethlo/time/internal/token/TimeZoneOffsetToken.java
@@ -50,6 +50,7 @@ public int read(final String text, final ParsePosition parsePosition)
         final char c = text.charAt(idx);
         if (c == 'Z' || c == 'z')
         {
+            parsePosition.setIndex(idx + 1);
             return 0;
         }
 
@@ -77,6 +78,7 @@ public int read(final String text, final ParsePosition parsePosition)
             }
         }
 
+        parsePosition.setIndex(idx + 6);
         return hours * 3600 + minutes * 60;
     }
 
diff --git a/src/main/java/com/ethlo/time/token/ConfigurableDateTimeParser.java b/src/main/java/com/ethlo/time/token/ConfigurableDateTimeParser.java
index 6c4ed76..58246d9 100644
--- a/src/main/java/com/ethlo/time/token/ConfigurableDateTimeParser.java
+++ b/src/main/java/com/ethlo/time/token/ConfigurableDateTimeParser.java
@@ -24,6 +24,7 @@
 import static com.ethlo.time.Field.YEAR;
 
 import java.text.ParsePosition;
+import java.time.format.DateTimeParseException;
 import java.util.Arrays;
 import java.util.HashSet;
 import java.util.Set;
@@ -57,10 +58,25 @@ public static DateTimeParser of(DateTimeToken... tokens)
 
     @Override
     public DateTime parse(String text, ParsePosition parsePosition)
+    {
+        try
+        {
+            return doParse(text, parsePosition);
+        }
+        catch (DateTimeParseException exc)
+        {
+            parsePosition.setIndex(exc.getErrorIndex());
+            parsePosition.setErrorIndex(exc.getErrorIndex());
+            throw exc;
+        }
+    }
+
+    private DateTime doParse(String text, ParsePosition parsePosition)
     {
         int fractionsLength = 0;
         int highestOrdinal = YEAR.ordinal();
         final int[] values = new int[]{0, 1, 1, 0, 0, 0, 0, -1};
+
         for (DateTimeToken token : tokens)
         {
             final int index = parsePosition.getIndex();
diff --git a/src/test/java/com/ethlo/time/token/ConfigurableDateTimeParserTest.java b/src/test/java/com/ethlo/time/token/ConfigurableDateTimeParserTest.java
index 118e40c..61a0365 100644
--- a/src/test/java/com/ethlo/time/token/ConfigurableDateTimeParserTest.java
+++ b/src/test/java/com/ethlo/time/token/ConfigurableDateTimeParserTest.java
@@ -45,11 +45,26 @@
 
 public class ConfigurableDateTimeParserTest
 {
+    private final DateTimeParser rfc3339Parser = DateTimeParsers.of(
+            digits(YEAR, 4),
+            separators('-'),
+            digits(MONTH, 2),
+            separators('-'),
+            digits(DAY, 2),
+            separators('T', 't', ' '),
+            digits(HOUR, 2),
+            separators(':'),
+            digits(MINUTE, 2),
+            separators(':'),
+            digits(SECOND, 2),
+            separators('.'),
+            fractions(),
+            zoneOffset()
+    );
+
     @Test
     void parseCustomFormat()
     {
-        final ParsePosition pos = new ParsePosition(0);
-        final String input = "31-12-2000 235937,123456";
         final DateTimeParser parser = DateTimeParsers.of(
                 digits(DAY, 2),
                 separators('-'),
@@ -63,6 +78,8 @@ void parseCustomFormat()
                 separators(','),
                 fractions()
         );
+        final ParsePosition pos = new ParsePosition(0);
+        final String input = "31-12-2000 235937,123456";
         final DateTime result = parser.parse(input, pos);
         assertThat(result).isEqualTo(DateTime.of(2000, 12, 31, 23, 59, 37, 123456000, null, 6));
     }
@@ -184,4 +201,23 @@ void readTimeZoneNegative()
         final int secs = new TimeZoneOffsetToken().read("-06:30", pos);
         assertThat(secs).isEqualTo(-23400);
     }
+
+    @Test
+    void testOffset()
+    {
+        final ParsePosition pos = new ParsePosition(10);
+        final String text = "2019-12-31T22:20:14.123+05:30";
+        rfc3339Parser.parse("123456789," + text + ",something", pos);
+        assertThat(pos.getIndex()).isEqualTo(10 + text.length());
+    }
+
+    @Test
+    void testOffsetError()
+    {
+        final ParsePosition pos = new ParsePosition(10);
+        final String text = "2019-12-31T22:20X14.123+05:30";
+        assertThrows(DateTimeParseException.class, () -> rfc3339Parser.parse("123456789," + text + ",something", pos));
+        assertThat(pos.getIndex()).isEqualTo(26);
+        assertThat(pos.getErrorIndex()).isEqualTo(26);
+    }
 }