#include <stdio.h>

int main()
{
	int i,n,h0,m0,h,m;
	while(scanf("%d",&n) != EOF)
	{
		for(i = 0; i < n; i++)
		{
			scanf("%d:%d",&h,&m);
			h0 = 13,m0 = 15;
			if(m0+m >= 60) 
			{
				m = (m0+m) % 60;
				h++;
			}
			else m = m0+m;
			if(h0+h >= 24)
			{
				h = (h0+h) % 24;
			}
			else h = h0+h;
			printf("%d:%d\n",h,m);
		}
	}
	
	return 0;
}