This second edition provides new and updated protocols to investigate clock-controlled parameters including period estimations and entrainment measurements and modelling. Chapters detail promoter activity using luciferase reporters, fluorescent-tagging of clock proteins and cellular imaging, protein level measurements, regulated RNA splicing detection, post-translational modifications, protein-protein interactions, and protein DNA/chromatin interactions. Additional chapters focus on seasonal processes like hypocotyl growth and flowering time control in annuals and trees, and...