Long press the clock widget and it gives ypu 4 options. Chose Edit clock option, it opens a pop up where you can change listed city to your time zone. For example if you are in Bangalore India and if it is not listed then choose Mumbai or New Delhi fron your time zone. The clock will set to the time of your time zone. I observed a lag on time in clock widget though. Mu clock shows a lag of one minute thirty five seconds approximately