#include<stdio.h>
int main()
{
 int hour[100],minute[100],nhour[100],nminute[100],n,i;
 scanf("%d",&n);
 if(n < 1)
  return 0;
 for(i = 0;i < n;i ++)
  scanf("%d:%d",&hour[i],&minute[i]);
    for(i = 0;i < n;i ++)
 {
   nhour[i] = 13 + hour[i];
   nminute[i] = 15 + minute[i];
   if(nminute[i] > 59)
   {
     nminute[i] = nminute[i] - 60;
  nhour[i] ++;
   }
   if(nhour[i] > 23)
    nhour[i] = nhour[i] - 24;
   printf("%d:%d\n",nhour[i],nminute[i]);
 }
 return 0;
}