#include <stdio.h>
#include <string.h>
#include <stdlib.h>


int main()
{
    int n, hour=13,minute=15;

    scanf("%d", &n);
    for (int i = 0,h,m; i < n; i++)
    {
        scanf("%d:%d", &h,&m);
        //更新小时
        h+=hour+((m+minute)/60);
        h%=24;
        //更新分钟
        m=(m+minute)%60;
        printf("%d:%d\n",h,m);
    }  
    //system("pause");
    return 0;
}