Ask HN: OCR from screenshot returns gibberish

My brother works at a restaurant and his manager sends him screenshots of the schedule via email.

I would like to write a simple OCR app that does the following:

-gets the screenshot from his gmail -finds his name on the schedule -adds the hours from the schedule to his google calendar

This is a fun weekend project. Thinking about building it in a new language I haven't used before.

However, when running the screenshot through the OCR stuff I can find online (before actually writing code) the results are absolutely horrible.

Am I doing this wrong or is OCR just not very good?