node-red-contrib-cron-plus
A flexible scheduler (cron, solar events, fixed dates) node for Node-RED with full dynamic control and time zone support
suncalc
A tiny JavaScript library for calculating sun/moon positions and phases.
homebridge-daily-sensors
[alpha] Daytime Sensor Plugin for Homebridge that provides a list of randomizable predefined (and customizable) sensors that trigger at certain daily events (like sunrise), events from your personal calendar, sun elevations, times or lux levels.