Usage of "六日目", "七日目", "八日目", etc.?


"六日" means "the 6th day of the month".  
"六日間" means a "time period of six days".

In a textbook, I found this example: "六日目の朝". How would you say that in
English?

I _think_ that "六日目" means an abstract kind of "6th day"? But, what is that
"6th" day relative to? What are some examples that use "~日目"?




As you stated, if you used 六日 alone it refers to the "sixth of the month".
However, you may want to refer to the sixth day of something, where something
will be either defined by the context or explicitly expressed.

In that sense, I think that ～日目 is almost the same that 第～日, the latter being
more formal to my opinion.

I did not have another example in mind, but, for example, wikipedia sums up
the beginning of the Book of Genisis the following way:

>   * 1日目 暗闇がある中、神は光を作り、昼と夜が出来た。
>   * 2日目 神は空（天）をつくった。
>   * 3日目 神は大地を作り、海が生まれ、地に植物をはえさせた。
>   * 4日目 神は太陽と月と星をつくった。
>   * 5日目 神は魚と鳥をつくった。
>   * 6日目 神は獣と家畜をつくり、神に似せた人をつくった。
>   * 7日目 神は休んだ。
>

From
[天地創造](https://ja.wikipedia.org/wiki/%E5%A4%A9%E5%9C%B0%E5%89%B5%E9%80%A0)

If I would have wanted to state clearly that it is the sixth day of the
creation of the universe, I could have said, 天地創造の6日目.

In [one](http://bible.salterrae.net/kougo/html/genesis.html) of the
translations of the Bible, you can see that 第～日 is used.




As you stated, if you used 六日 alone it refers to the "sixth of the month".
However, you may want to refer to the sixth day of something, where something
will be either defined by the context or explicitly expressed.

In that sense, I think that ～日目 is almost the same that 第～日, the latter being
more formal to my opinion.

I did not have another example in mind, but, for example, wikipedia sums up
the beginning of the Book of Genisis the following way:

>   * 1日目 暗闇がある中、神は光を作り、昼と夜が出来た。
>   * 2日目 神は空（天）をつくった。
>   * 3日目 神は大地を作り、海が生まれ、地に植物をはえさせた。
>   * 4日目 神は太陽と月と星をつくった。
>   * 5日目 神は魚と鳥をつくった。
>   * 6日目 神は獣と家畜をつくり、神に似せた人をつくった。
>   * 7日目 神は休んだ。
>

From
[天地創造](https://ja.wikipedia.org/wiki/%E5%A4%A9%E5%9C%B0%E5%89%B5%E9%80%A0)

If I would have wanted to state clearly that it is the sixth day of the
creation of the universe, I could have said, 天地創造の6日目.

In [one](http://bible.salterrae.net/kougo/html/genesis.html) of the
translations of the Bible, you can see that 第～日 is used.

