xdaliclock-2.18/X11/digital.c:1260

          if (date == 0)
            {
              struct tm tm;
              memset(&tm, 0, sizeof(tm));
              tm.tm_year = 100;
              tm.tm_mday = 1;
              tm.tm_isdst = -1;
              date = mktime(&tm);
              was = (clock >= date);
            }
          if (!was && clock >= date)
            {
              int j, k;
              be_a_pig = was = -1;
              memset (time_digits, -1, sizeof(time_digits));
              for (i = 0; i < sizeof(base_frames)/sizeof(*base_frames); i++)
                for (j = 0; j < character_height; j++)
                  for (k = 0; k < MAX_SEGS_PER_LINE; k++)
                    {
# define SHIFT(x) x=character_width-x
                      SHIFT(base_frames[i]->scanlines[j].left[k]);
                      SHIFT(base_frames[i]->scanlines[j].right[k]);
# undef SHIFT
                    }
            }