on saturday, march 20th at 11:30am, michael meskes will deliver a talk about why and how an organisation should migrate to free software in business environments.

How would the previous sentence be correctly capitalized?
Answer: On Saturday, March 20th at 11:30am, Michael Meskes will deliver a talk about why and how an organisation should migrate to Free Software in business environments.
before you can open a dag file, you'll need to figure out what kind of file the dag file extension refers to.

How would the previous sentence be correctly capitalized?
Answer: Before you can open a DAG file, you'll need to figure out what kind of file the DAG file extension refers to.
in mira, land and sea come together to provide the perfect destination for a relaxing holiday in an area of unspoilt natural beauty.

How would the previous sentence be correctly capitalized?
Answer: In Mira, land and sea come together to provide the perfect destination for a relaxing holiday in an area of unspoilt natural beauty.
1 but jesus went to the mount of olives.

How would the previous sentence be correctly capitalized?
Answer: 1 But Jesus went to the mount of Olives.