Check difference between unlisted results and identify which day of the week is the date

I have the following query:

SELECT 
    V.CHAPA,
    F.NOME,
    V.DATA,
    MAX(V.SEQUENCIALBATIDA) AS BATIDA
      FROM
            ARELBATIDATRANSITOVIEW AS V
            LEFT JOIN V_DADOSFUNC  AS F ON V.CHAPA = F.CHAPA
        WHERE
            V.CHAPA = 9132
        AND BATIDA IS NOT NULL 
        AND V.CODCOLIGADA = 1 
        AND  YEAR ( V.DATA ) = 2016 
        AND MONTH ( V.DATA ) = 9
         GROUP BY V.CHAPA,
                  F.NOME,
                  V.DATA 
          ORDER BY V.DATA ASC

It returns me:

1234    JOAO DA SILVA   2016-09-02 00:00:00.000 4
1234    JOAO DA SILVA   2016-09-03 00:00:00.000 4
1234    JOAO DA SILVA   2016-09-04 00:00:00.000 2
1234    JOAO DA SILVA   2016-09-05 00:00:00.000 4
1234    JOAO DA SILVA   2016-09-06 00:00:00.000 4

>>> 1234    JOAO DA SILVA   2016-09-07 00:00:00.000 2
>>> 1234    JOAO DA SILVA   2016-09-09 00:00:00.000 4

1234    JOAO DA SILVA   2016-09-10 00:00:00.000 4
1234    JOAO DA SILVA   2016-09-11 00:00:00.000 2
1234    JOAO DA SILVA   2016-09-12 00:00:00.000 4
1234    JOAO DA SILVA   2016-09-13 00:00:00.000 4

>>> 1234    JOAO DA SILVA   2016-09-14 00:00:00.000 4
>>> 1234    JOAO DA SILVA   2016-09-16 00:00:00.000 4

As you can see in the places where I marked with >>> there is no record on that date, example: da data 7 pula para a data 9 and da data 14 pula para a 16 , this is correct because on that day there was no movement.

What I need to know:  How many days are the dia 08 e o dia 15 that are the days that do not have movement since this period can not exceed 7 days.

Another aspect that I need is:  In that same query:

SELECT 
    V.CHAPA,
    F.NOME,
    V.DATA,
    MAX(V.SEQUENCIALBATIDA) AS BATIDA
      FROM
            ARELBATIDATRANSITOVIEW AS V
            LEFT JOIN V_DADOSFUNC  AS F ON V.CHAPA = F.CHAPA
        WHERE
            V.CHAPA = 9132
        AND BATIDA IS NOT NULL 
        AND V.CODCOLIGADA = 1 
        AND  YEAR ( V.DATA ) = 2016 
        AND MONTH ( V.DATA ) = 9
         GROUP BY V.CHAPA,
                  F.NOME,
                  V.DATA 
          ORDER BY V.DATA ASC

I need to identify which day of the week is the date, and list only on Sundays.

How could you proceed with these two cases?