#include<iostream>
#include <string>
#include<cstdlib>

using namespace std;

int main()
{
	int n;
	int now_hour=13,now_min=15;
	int hour,min;
	scanf("%d",&n);
	while(n>0)
	{
		scanf("%d:%d",&hour,&min);
		min=min+now_min;
		while(min>60)
		{
			hour++;
			min=min-60;
		}
		hour=(hour+now_hour)%24;
		printf("%d:%d\n",hour,min);
		n--;
	}

	//system("pause");
	return 0;
}