Nerd Days 1.0: Return of the Data Nerd is a new, one-day virtual conference dedicated to engineers, offering a hands-on experience with observability tools and opportunities for sharing knowledge and passion. The event features five tracks covering topics such as Observability, Cloud Migration, Open Source, DevOps Journey, and Fundamentals. A call for proposals has been opened, allowing developers to submit their presentations or workshops, which will be reviewed by a committee of subject matter experts. The conference aims to support engineers who are fueled by a desire for connection, entrepreneurship, and problem-solving, with the goal of creating more perfect software using observability tools.