diff --git a/lib/compile/formats.js b/lib/compile/formats.js
index 5c0fb9e..d06792a 100644
--- a/lib/compile/formats.js
+++ b/lib/compile/formats.js
@@ -4,7 +4,7 @@ var util = require('./util');
 
 var DATE = /^(\d\d\d\d)-(\d\d)-(\d\d)$/;
 var DAYS = [0,31,28,31,30,31,30,31,31,30,31,30,31];
-var TIME = /^(\d\d):(\d\d):(\d\d)(\.\d+)?(z|[+-]\d\d:\d\d)?$/i;
+var TIME = /^(\d\d):(\d\d):(\d\d)(\.\d+)?(z|[+-]\d\d(?::?\d\d)?)?$/i;
 var HOSTNAME = /^[a-z0-9](?:[a-z0-9-]{0,61}[a-z0-9])?(?:\.[a-z0-9](?:[-0-9a-z]{0,61}[0-9a-z])?)*$/i;
 var URI = /^(?:[a-z][a-z0-9+\-.]*:)(?:\/?\/(?:(?:[a-z0-9\-._~!$&'()*+,;=:]|%[0-9a-f]{2})*@)?(?:\[(?:(?:(?:(?:[0-9a-f]{1,4}:){6}|::(?:[0-9a-f]{1,4}:){5}|(?:[0-9a-f]{1,4})?::(?:[0-9a-f]{1,4}:){4}|(?:(?:[0-9a-f]{1,4}:){0,1}[0-9a-f]{1,4})?::(?:[0-9a-f]{1,4}:){3}|(?:(?:[0-9a-f]{1,4}:){0,2}[0-9a-f]{1,4})?::(?:[0-9a-f]{1,4}:){2}|(?:(?:[0-9a-f]{1,4}:){0,3}[0-9a-f]{1,4})?::[0-9a-f]{1,4}:|(?:(?:[0-9a-f]{1,4}:){0,4}[0-9a-f]{1,4})?::)(?:[0-9a-f]{1,4}:[0-9a-f]{1,4}|(?:(?:25[0-5]|2[0-4]\d|[01]?\d\d?)\.){3}(?:25[0-5]|2[0-4]\d|[01]?\d\d?))|(?:(?:[0-9a-f]{1,4}:){0,5}[0-9a-f]{1,4})?::[0-9a-f]{1,4}|(?:(?:[0-9a-f]{1,4}:){0,6}[0-9a-f]{1,4})?::)|[Vv][0-9a-f]+\.[a-z0-9\-._~!$&'()*+,;=:]+)\]|(?:(?:25[0-5]|2[0-4]\d|[01]?\d\d?)\.){3}(?:25[0-5]|2[0-4]\d|[01]?\d\d?)|(?:[a-z0-9\-._~!$&'()*+,;=]|%[0-9a-f]{2})*)(?::\d*)?(?:\/(?:[a-z0-9\-._~!$&'()*+,;=:@]|%[0-9a-f]{2})*)*|\/(?:(?:[a-z0-9\-._~!$&'()*+,;=:@]|%[0-9a-f]{2})+(?:\/(?:[a-z0-9\-._~!$&'()*+,;=:@]|%[0-9a-f]{2})*)*)?|(?:[a-z0-9\-._~!$&'()*+,;=:@]|%[0-9a-f]{2})+(?:\/(?:[a-z0-9\-._~!$&'()*+,;=:@]|%[0-9a-f]{2})*)*)(?:\?(?:[a-z0-9\-._~!$&'()*+,;=:@/?]|%[0-9a-f]{2})*)?(?:#(?:[a-z0-9\-._~!$&'()*+,;=:@/?]|%[0-9a-f]{2})*)?$/i;
 var URIREF = /^(?:[a-z][a-z0-9+\-.]*:)?(?:\/?\/(?:(?:[a-z0-9\-._~!$&'()*+,;=:]|%[0-9a-f]{2})*@)?(?:\[(?:(?:(?:(?:[0-9a-f]{1,4}:){6}|::(?:[0-9a-f]{1,4}:){5}|(?:[0-9a-f]{1,4})?::(?:[0-9a-f]{1,4}:){4}|(?:(?:[0-9a-f]{1,4}:){0,1}[0-9a-f]{1,4})?::(?:[0-9a-f]{1,4}:){3}|(?:(?:[0-9a-f]{1,4}:){0,2}[0-9a-f]{1,4})?::(?:[0-9a-f]{1,4}:){2}|(?:(?:[0-9a-f]{1,4}:){0,3}[0-9a-f]{1,4})?::[0-9a-f]{1,4}:|(?:(?:[0-9a-f]{1,4}:){0,4}[0-9a-f]{1,4})?::)(?:[0-9a-f]{1,4}:[0-9a-f]{1,4}|(?:(?:25[0-5]|2[0-4]\d|[01]?\d\d?)\.){3}(?:25[0-5]|2[0-4]\d|[01]?\d\d?))|(?:(?:[0-9a-f]{1,4}:){0,5}[0-9a-f]{1,4})?::[0-9a-f]{1,4}|(?:(?:[0-9a-f]{1,4}:){0,6}[0-9a-f]{1,4})?::)|[Vv][0-9a-f]+\.[a-z0-9\-._~!$&'()*+,;=:]+)\]|(?:(?:25[0-5]|2[0-4]\d|[01]?\d\d?)\.){3}(?:25[0-5]|2[0-4]\d|[01]?\d\d?)|(?:[a-z0-9\-._~!$&'"()*+,;=]|%[0-9a-f]{2})*)(?::\d*)?(?:\/(?:[a-z0-9\-._~!$&'"()*+,;=:@]|%[0-9a-f]{2})*)*|\/(?:(?:[a-z0-9\-._~!$&'"()*+,;=:@]|%[0-9a-f]{2})+(?:\/(?:[a-z0-9\-._~!$&'"()*+,;=:@]|%[0-9a-f]{2})*)*)?|(?:[a-z0-9\-._~!$&'"()*+,;=:@]|%[0-9a-f]{2})+(?:\/(?:[a-z0-9\-._~!$&'"()*+,;=:@]|%[0-9a-f]{2})*)*)?(?:\?(?:[a-z0-9\-._~!$&'"()*+,;=:@/?]|%[0-9a-f]{2})*)?(?:#(?:[a-z0-9\-._~!$&'"()*+,;=:@/?]|%[0-9a-f]{2})*)?$/i;
@@ -33,8 +33,8 @@ formats.fast = {
   // date: http://tools.ietf.org/html/rfc3339#section-5.6
   date: /^\d\d\d\d-[0-1]\d-[0-3]\d$/,
   // date-time: http://tools.ietf.org/html/rfc3339#section-5.6
-  time: /^(?:[0-2]\d:[0-5]\d:[0-5]\d|23:59:60)(?:\.\d+)?(?:z|[+-]\d\d:\d\d)?$/i,
-  'date-time': /^\d\d\d\d-[0-1]\d-[0-3]\d[t\s](?:[0-2]\d:[0-5]\d:[0-5]\d|23:59:60)(?:\.\d+)?(?:z|[+-]\d\d:\d\d)$/i,
+  time: /^(?:[0-2]\d:[0-5]\d:[0-5]\d|23:59:60)(?:\.\d+)?(?:z|[+-]\d\d(?::?\d\d)?)?$/i,
+  'date-time': /^\d\d\d\d-[0-1]\d-[0-3]\d[t\s](?:[0-2]\d:[0-5]\d:[0-5]\d|23:59:60)(?:\.\d+)?(?:z|[+-]\d\d(?::?\d\d)?)$/i,
   // uri: https://github.com/mafintosh/is-my-json-valid/blob/master/formats.js
   uri: /^(?:[a-z][a-z0-9+-.]*:)(?:\/?\/)?[^\s]*$/i,
   'uri-reference': /^(?:(?:[a-z][a-z0-9+-.]*:)?\/?\/)?(?:[^\\\s#][^\s#]*)?(?:#[^\\\s]*)?$/i,
diff --git a/spec/.eslintrc.yml b/spec/.eslintrc.yml
index f9c66d5..543e6ee 100644
--- a/spec/.eslintrc.yml
+++ b/spec/.eslintrc.yml
@@ -7,5 +7,6 @@ globals:
   describe: false
   it: false
   before: false
+  after: false
   beforeEach: false
   afterEach: false
diff --git a/spec/tests/issues/1061_alternative_time_offsets.json b/spec/tests/issues/1061_alternative_time_offsets.json
new file mode 100644
index 0000000..bf80f95
--- /dev/null
+++ b/spec/tests/issues/1061_alternative_time_offsets.json
@@ -0,0 +1,74 @@
+[
+  {
+    "description": "Support for alternative ISO-8601 timezone offset formats (#1061)",
+    "schema": {"format": "date-time"},
+    "tests": [
+      {
+        "description": "valid positiive two digit",
+        "data": "2016-01-31T02:31:17+01",
+        "valid": true
+      },
+      {
+        "description": "valid negative two digit",
+        "data": "2016-01-31T02:31:17-01",
+        "valid": true
+      },
+      {
+        "description": "valid positiive four digit no colon",
+        "data": "2016-01-31T02:31:17+0130",
+        "valid": true
+      },
+      {
+        "description": "valid negative four digit no colon",
+        "data": "2016-01-31T02:31:17-0130",
+        "valid": true
+      },
+      {
+        "description": "invalid positiive three digit no colon",
+        "data": "2016-01-31T02:31:17+013",
+        "valid": false
+      },
+      {
+        "description": "invalid negative three digit no colon",
+        "data": "2016-01-31T02:31:17-013",
+        "valid": false
+      }
+    ]
+  },
+  {
+    "description": "Support for alternative ISO-8601 timezone offset formats (#1061)",
+    "schema": {"format": "time"},
+    "tests": [
+      {
+        "description": "valid positiive two digit",
+        "data": "02:31:17+01",
+        "valid": true
+      },
+      {
+        "description": "valid negative two digit",
+        "data": "02:31:17-01",
+        "valid": true
+      },
+      {
+        "description": "valid positiive four digit no colon",
+        "data": "02:31:17+0130",
+        "valid": true
+      },
+      {
+        "description": "valid negative four digit no colon",
+        "data": "02:31:17-0130",
+        "valid": true
+      },
+      {
+        "description": "invalid positiive three digit no colon",
+        "data": "02:31:17+013",
+        "valid": false
+      },
+      {
+        "description": "invalid negative three digit no colon",
+        "data": "02:31:17-013",
+        "valid": false
+      }
+    ]
+  }
+]