#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
#define int ll
const double eps = 1e-6;
int get(double x){
    for(int i=x-2;i<=x+2;i++){
        if(abs(x-i)<eps)return i;
    }
    assert(0);
    return 0;
}

inline void solve(){
    double x;int h,m;
    scanf("%lld %lld UTC%lf",&h,&m,&x);
    x-=8;
    x*=60;
    m+=get(x);
    while(m<0){
        m+=60;h--;if(h<0)h+=24;
    }
    while(m>=60){
        m-=60;h++;if(h>=24)h-=24;
    }
    printf("%02lld:%02lld\n",h,m);
    

}



signed main(){
    // ios::sync_with_stdio(false),cin.tie(0),cout.tie(0);
    int WTN666=1;cin>>WTN666;
    while(WTN666--){
        solve();
    }
}