Hi @Andy, you mentioned in your post above that you hardcoded recording schedules into the firmware. Could you please explain the procedure to hardcode recording times for every selected days in the firmware (ie which files to modify https://github.com/OpenAcousticDevices)? I believe that the Audiomoth does not memorise the actual recording times but merely keeps track of the time to the next recording period (https://github.com/OpenAcousticDevices/AudioMoth-Firmware-Basic/blob/master/main.c). If that's right, I can't see how to hardcode times for every single days. I'd like to hardcode sunrise/sunset times. I believe this option will be available in the next Audiomoth version (the one with the external mic option)? Many thanks EDIT: although not about hardcoding different recording times for every single days, this post deals with hardcoding a specific starting date for recording.