ruby 1.9.3p448

require 'fileutils'
require 'time'
#require 'rubygems' if RUBY_VERSION < '1.9'
require 'date'

@date_array = [7, 1]
@array_date =Array.new
@array_timestampdate =Array.new


 @date_array.map do |dday|
  @array_date << (Date.today-dday).strftime("%Y-%m-%d-23:00:00")                                                                                                                 
 end
   @array_date.map do |f|
    @array_timestampdate << Time.parse(f).to_i
     puts "date timestamp monday #{@array_timestampdate[0]}"  
     puts "date timestamp friday #{@array_timestampdate[1]}"  
   end


i get this : 
date timestamp monday 1395615600
date timestamp friday 1396134000
date timestamp monday 1395615600
date timestamp friday 1396134000

it's exatly what i want  30/3/2014 à 0:00:00 


in my other server i get this 30/3/2014 à 1:00:00 

date timestamp monday 1395619200
date timestamp friday 1396137600