The ESP8266 is using the NodeMCU firmware.
The ESP8266 run's a LUA interpreter which is handling the wifi connection and retrieving the current date/time from Google.
(I have another version retrieving via NTP)
The LED above the ESP8266 lights up when WiFi is OK
No PC is required.
Video here https://www.youtube.com/watch?v=TX3xUHRYqOs
All files here: https://mega.co.nz/#F!FdIQnJLY!ls1L4doQrnrlVZXuB2bckQ