You would be selecting the rows for the posts in January, like this,
SELECT * FROM Posts WHERE MonthOfPost = 'January'
This is an example, to get the posts from the january month. To show them in an order, you can use ORDER BY clause, like this
SELECT * FROM Posts WHERE MonthOfPost = 'January' ORDER BY TimeOfPost
To show them in an descending order, you can use the
in the end of the query's ORDER BY clause.