In this instructable, I am going to share how I made an ESP8266 based hackable Internat Clock. The clock is able to show:
Time, Date, Weather updates (e.g. temperature, humidity, pressure, clouds, sunrise, sunset), Weather forecast, Facebook like and notification, Youtube subscriber counter Customize message and many more The firmware of the clock can be updated over wifi. No physical connection is required. No RTC module or Arduino is required.”

Link