diff --git a/package.json b/package.json
index ded2cf6..6688c47 100644
--- a/package.json
+++ b/package.json
@@ -42,7 +42,8 @@
     "multihashes": "~0.4.12",
     "multihashing-async": "~0.5.1",
     "smart-buffer": "^4.0.0",
-    "traverse": "~0.6.6"
+    "traverse": "~0.6.6",
+    "moment": "^2.24.0"
   },
   "devDependencies": {
     "aegir": "^18.0.2",
diff --git a/src/util/util.js b/src/util/util.js
index a4b4a71..f442cba 100644
--- a/src/util/util.js
+++ b/src/util/util.js
@@ -5,6 +5,7 @@ const multihashes = require('multihashes/src/constants')
 const multicodecs = require('multicodec/src/base-table')
 const multihash = require('multihashes')
 const CID = require('cids')
+const moment = require('moment')
 
 exports = module.exports
 
@@ -20,7 +21,7 @@ exports.find = (buf, byte) => {
 }
 
 exports.parsePersonLine = (line) => {
-  let matched = line.match(/^(([^<]+)\s)?\s?<([^>]+)>\s?(\d+\s[+\-\d]+)?$/)
+  let matched = line.match(/^(([^<]+)\s)?\s?<([^>]+)>\s?(\d+\s[+\-\d]+|[\d+\-:T]+)?$/)
   if (matched === null) {
     return null
   }
@@ -28,7 +29,7 @@ exports.parsePersonLine = (line) => {
   return {
     name: matched[2],
     email: matched[3],
-    date: matched[4]
+    date: matched[4] && moment.parseZone(matched[4], ['X ZZ', moment.ISO_8601]).format('X ZZ')
   }
 }
 
@@ -39,7 +40,7 @@ exports.serializePersonLine = (node) => {
   }
   parts.push('<' + node.email + '>')
   if (node.date) {
-    parts.push(node.date)
+    parts.push(moment.parseZone(node.date, 'X ZZ').format())
   }
 
   return parts.join(' ')