I forgot to mention that the new enhanced code that needs to be loaded on the ESP module is located at the bottom of the above posted PIC listing. It is commented out so it doesn't interfere with the PIC code.
This new ESP code provides more NTP time data to the PIC. It now sends day of week, month and day of month, along with the HH:MM:SS

The pic code used the date information to determine if daylight saving time needs to be in effect.

Due to drift in the internal osc in the 16f1828 you may want to check NTP time more than once a day.
It seems to drift about 2 minutes in 24 hours so checking the time 2-3 times a day (or even once an hour) would insure your clock is more accurate.

cheers
dwight

PS if you decide to build one of these please let me know before you order your boards from oshpark as I would be willing to upload a new board design that incorporates a couple of improvements. The boards work fine as is but I found that I overdesigned it to try and turn off the high voltage to blank the display and it is much easier to do that in software by just not turning on any digits.