I've tried 2 different tabs that I found and I tried playing it like this and thought 
this sounded better. This is my first tabe so no hate.

                           "Someday At Christmas"


   C                Cmaj7
Someday at Christmas men won't be boys
  Cm                     F
Playing with bombs like kids play with toys
 F                 C
One warm December our hearts will see
    D7                 G
A world where men are free.

  C                    Cmaj7
Someday at Christmas there'll be no wars
 Cm                           F
When we have learned what Christmas is for
 F                        C
When we have found what life's really worth
   D7                  G
There'll be peace on earth.

  C                         Cmaj7
Someday all our dreams will come to be
  Cm                      F
Someday in a world where men are free
  F                    C
Maybe not in time for you and me
       D7                 G
But someday at Christmas time.

  C                    Cmaj7
Someday at Christmas we'll see a land
 Cm                      F
With no hungry children, no empty hand
 F                  C
One happy morning people will share
     D7                 G
Our world where people care.

  C                     Cmaj7
Someday at Christmas there'll be no tears
 Cm                   F
All men are equal and no men have fears
 F                        C
One shining moment, one prayer away
     D7         G
From our world today.

  C                        Cmaj7
Someday all our dreams will come to be
  Cm                      F
Someday in a world where men are free
 F                     C
Maybe not in time for you and me
      D7                  G
But someday at Christmas time.

  C                 Cmaj7
Someday at Christmas man will not fail
 Cm                     F
Hate will be gone and love will prevail
  F                      C
Someday a new world that we can start
      D7             G
With hope in every heart.

  C                         Cmaj7
Someday all our dreams will come to be
  Cm                      F
Someday in a world where men are free
  F                    C
Maybe not in time for you and me
      D7                  G
But someday at Christmas time
   D7                 C
Someday at Christmas time.

This is my version, hope you like it. :)