Adjusting dual clock using DS3231 on 1.8" ST7735 display

original article

  I change the sketch for create a dual clock (GMT/UTC and local time), but I use same schemtic as in article Adjuting clock with thermometer using DS3231 on 1.8" ST7735 display

  Last version of uploaded sketch is TFT_DualDigitalClock_RTC2.ino. Also, I made a movie named adjuting dual clock using DS3231 on 1.8" ST7735 display for see how the clock can be adjusted (hour, minute, name of day, year, month, day, difference between local time and UTC/GMT):