GLCD clock with large graphical LCD

ezflyr posted his GLCD clock with large graphical LCD in the project log forum:

I’ve made quite a bit of progress on my GLCD clock project in the last week or so. I’ve now got the time keeping routines, and the GPS ‘sync’ routines working flawlessly. When connected to a GPS receiver, the clock will sync to GPS time once every 24 hours, or immediately if 24 hours has passed without an update. Frankly, the DS3231 RTC seems to be accurate enough to set initially, and then correct with GPS every few months, so I’ll probably only connect the GPS on occasion. This RTC has very low drift!