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

typedef long long ll;
#define fi first
#define se second
#define all(x) (x).begin(),(x).end()
#define pb push_back
int main()
{
    // ios::sync_with_stdio(0);cin.tie(0);
    int T;
    scanf("%d",&T);
    while(T--)
    {
        int x,y;double f;
        scanf("%d%d",&x,&y);
        scanf(" UTC%lf",&f);
        // cerr<<x<<' '<<y<<' '<<f<<'\n';
        double del=f-8;
        int g=int(del);
        x=(x+g+24)%24;
        int h=int(round((del-g)*60));
        y=(y+h);
        if(y>=60)
        y-=60,x++;
        if(y<0)
        y+=60,x--;
        x=(x+24)%24;
        printf("%02d:%02d\n",x,y);
    }
}