text: SYSTEMTIME st = { 0 }; 
  WCHAR s[100]; 
  FileTimeToSystemTime(pfiletime, &st); 
  swprintf(s, 99, L" %04d-%02d-%02dT%02d:%02d:%02dZ", st.wYear % 10000, 
   st.wMonth % 100, st.wDay % 100, st.wHour % 100, st.wMinute % 100, 
   st.wSecond % 100); 