Date tzinfo and european format

Hello,

i have a problem with the format of my dates and time

i have an method with this line

:published_at => utc_to_local(Time.now.utc))

in dev mode it’s working great

=> Tue Mar 06 13:27:00 UTC 2007

Time.now.utc
=> Mon Apr 02 22:48:40 UTC 2007

On server for production

=> lun avr 02 22:28:00 -0400 2007

Time.now.utc
=> lun avr 02 23:37:28 UTC 2007

How i can fix that ?

thanks you