What languages to focus your time learning?

I'm in the job market right now looking at Web developer openings. In my area it seems that each opening has a different set of technologies they use. (I'm in the Oceanside, CA area.) How do you know what languages to focus your time learning? Right now I know HTML5, JavaScript, Java, PHP, and Python. Learning AngularJS and NodeJS. Just finished a contract job as a Web Developer at Life Technologies that lasted two years. What languages do you know and use at your job that are in demand?