diff --git a/migrations/20150201_convert_creation_date_from_string_to_object.js b/migrations/20150201_convert_creation_date_from_string_to_object.js
new file mode 100644
index 0000000000..bc3a98bb02
--- /dev/null
+++ b/migrations/20150201_convert_creation_date_from_string_to_object.js
@@ -0,0 +1,106 @@
+var migrationName = '20150201_convert_creation_date_from_string_to_object__no_date_recent_signup';
+//// var migrationName = '20150201_convert_creation_date_from_string_to_object';
+
+var authorName = 'Alys'; // in case script author needs to know when their ...
+var authorUuid = 'd904bd62-da08-416b-a816-ba797c9ee265'; //... own data is done
+
+/*
+ * For users that have no value for auth.timestamps.created, assign them
+ * a recent value.
+ *
+ * NOTE:
+ * Before this script was used as described above, it was first used to
+ * find all users that have a auth.timestamps.created field that is a string
+ * rather than a date object and set it to be a date object. The code used
+ * for this has been commented out with four slashes: ////
+ * 
+ * https://github.com/HabitRPG/habitrpg/issues/4601#issuecomment-72339846
+ */
+
+var dbserver = 'localhost:27017' // CHANGE THIS FOR PRODUCTION DATABASE
+
+var mongo = require('mongoskin');
+var _ = require('lodash');
+var moment = require('moment');
+
+var dbUsers = mongo.db(dbserver + '/habitrpg?auto_reconnect').collection('users');
+
+var uuidArrayRecent=[ // recent users with no creation dates
+'1a0d4b75-73ed-4937-974d-d504d6398884',
+'1c7ebe27-1250-4f95-ba10-965580adbfd7',
+'5f972121-4a6d-411c-95e9-7093d3e89b66',
+'ae85818a-e336-4ccd-945e-c15cef975102',
+'ba273976-d9fc-466c-975f-38559d34a824',
+];
+
+var query = {
+    '_id':{$in: uuidArrayRecent}
+    //// 'auth':{$exists:true},
+    //// 'auth.timestamps':{$exists:true},
+    //// 'auth.timestamps.created':{$not: {$lt:new Date('2018-01-01')}}
+    };
+
+var fields = {
+    '_id':1,
+    'auth.timestamps.created':1
+    };
+    // 'achievements.habitBirthdays':1
+
+console.warn('Updating users...');
+var progressCount = 1000;
+var count = 0;
+dbUsers.findEach(query, fields, {batchSize:250}, function(err, user) {
+    if (err) { return exiting(1, 'ERROR! ' + err); }
+    if (!user) {
+        console.warn('All appropriate users found and modified.');
+        return displayData();
+    }
+    count++;
+
+    //// var oldDate = user.auth.timestamps.created;
+    //// var newDate = moment(oldDate).toDate();
+    var oldDate = 'none';
+    var newDate = moment('2015-01-11').toDate();
+    console.warn(user._id + ' == ' + oldDate + ' == ' + newDate);
+
+    //// var set = { 'migration': migrationName,
+                //// 'auth.timestamps.created': newDate,
+                //// 'achievements.habitBirthdays': 2,
+                //// 'items.gear.owned.head_special_nye':true,
+                //// 'items.gear.owned.head_special_nye2014':true,
+                //// 'items.gear.owned.armor_special_birthday':true,  
+                //// 'items.gear.owned.armor_special_birthday2015':true,
+                //// };
+
+    var set = { 'migration': migrationName,
+                'auth.timestamps.created': newDate,
+                'achievements.habitBirthdays': 1,
+                'items.gear.owned.armor_special_birthday':true,  
+                };
+
+    // var unset = {'items.gear.owned.armor_special_birthday2015': 1};
+    // var inc = {'xyz':1, _v:1};
+    dbUsers.update({_id:user._id}, {$set:set});
+    // dbUsers.update({_id:user._id}, {$unset:unset, $set:set, $inc:inc});
+
+    if (count%progressCount == 0) console.warn(count + ' ' + user._id);
+    if (user._id == authorUuid) console.warn(authorName + ' processed');
+    if (user._id == '9'       ) console.warn('lefnire'  + ' processed');
+});
+
+
+function displayData() {
+    console.warn('\n' + count + ' users processed\n');
+    return exiting(0);
+}
+
+
+function exiting(code, msg) {
+    code = code || 0; // 0 = success
+    if (code && !msg) { msg = 'ERROR!'; }
+    if (msg) {
+        if (code) { console.error(msg); }
+        else      { console.log(  msg); }
+    }
+    process.exit(code);
+}