According to the query of Baidu Library, in the writing of nursing documents, August can be written as August for the following reasons:

1. In some cases, simplified digital forms can convey information more clearly. August is a simplified form of months, which can clearly express the meaning of "August".

2. This writing style is very common in medical and nursing fields, because accurate time and date are needed in medical and nursing records. Using the date in digital form can better maintain the consistency and accuracy of records.

3. In addition, this writing method also conforms to the date writing habits of some countries and regions, which is also beneficial in transnational or cross-cultural communication.