Localized dates in the detail form

I noticed that dates are not localized in the check-out detail form. I solved it changing lines 159 and 483 (hotel_booking.panes.inc) from

night_formatted = $night_date->format('l F j, Y'); //format object

to

$night_formatted = t($night_date->format('l')) . " " . t($night_date->format('F')) . $night_date->format(' j, Y'); //format object

and lines 194 and 518 from

$check_out_formatted = $night_date->format('l F j, Y');

to

$check_out_formatted = t($night_date->format('l')) . " " . t($night_date->format('F')) . $night_date->format(' j, Y'); //format object

Is there any better way?

Thanks in advance!