#include<bits/stdc++.h>
using namespace std;

int main(){
	
	int n; cin >> n;
	while(n -- > 0){
		int minu = (13*60 + 15);
		int h, m;
		scanf("%d:%d", &h, &m);
		minu += (h*60 + m); 
		
		m = minu % 60;
		h = (minu/60) % 24;
		
		printf("%d:%d\n", h, m);
	}
	
	return 0;
}