Chronobiology is the study of biological timing. Life unfolds within the context of time, with one of the most apparent measures of time being the 24-hour day-night cycle. Our internal biological rhythm, known as circadian rhythm, which is almost 24 hours long, is fascinatingly dependent on the external 24-hour day-night cycle to coordinate daily biological functions. As scientists advance the field of chronobiology, accessible methods that deliver quality results are essential for maximizing impact and ensuring widespread applicability. 

This Methods Collection aims to highlight recent strategies for studying the timing of biological processes. Techniques highlighting the significance of modulatory environmental factors, such as the day-night cycle, are encouraged. Molecular, in vitro, in vivo, behavioral, physiological, and electrophysiological methods are also welcome. These approaches should address fundamental questions in chronobiology and be designed for easy translation and reproducibility. If the methodology involves a specialized tool, it must be readily accessible for others to adopt or purchase. By offering a comprehensive collection of cutting-edge methods and fostering collaboration among researchers, this initiative will accelerate progress in chronobiology.