There is an official Smartthings SmartApp that uses the hebcal API to automatically change the mode of the hub based on Shabbos and Yom Tov. However, Samsung is changing their APIs around and the SmartApp isn't behaving properly. I spoke to the creator of the SmartApp and he isn't sure what the problem is exactly. I was wondering if someone would be willing to help me set up a similar system using webCoRE.
Customer support service by UserEcho