how to sync_clock time of Heroku to AWS S3 image upload with carrierWave

I got an error every time when image upload happens

RequestTimeTooSkewed

The difference between the request time and the current time is too large.

Thu,24 Oct 2013 22:17:41+0000

2013-10-24T22:33:21Z

The time difference is more then 15 Min. how to set this to actual time please help us to set heroku time to actual time.

We are using carrierwave v 0.6.2, mini_magick v 3.5.0 ,rails 3.2.13 and ruby 1.9.3 in our application

more ref : http://stackoverflow.com/questions/19559190/how-to-apply-sync-clock-option-on-s3-upload-with-carrierwave-in-ruby-on-rails

http://stackoverflow.com/questions/19583625/how-to-sync-clock-time-of-heroku-to-aws-s3-image-upload-with-carrierwave

please helps to resolve this issue application take to much time in process