#include<stdio.h>
int main()
{   int n;
    scanf("%d",&n);
    for(int i=0;i<n;i++)
    {
        int hour,min;
        scanf("%d:%d",&hour,&min);
        if(min>=45) {hour=hour+1;min=min+15-60;}
        else min=min+15;
        if(hour+13<24)
            hour=hour+13;
        else{hour=hour+13-24;}
        printf("%d:%d\n",hour,min);
    }
    return 0;
}