#include <iostream>
#include <cstring>
#include <iomanip>
#include <math.h>
#include <climits>

using namespace std;

bool isright(int year1, int month1, int day1, int hour1, int minute1, int second1, int year2, int month2,
             int day2, int hour2, int minute2, int second2) {
    if (year1 < 1 || year2 < 1) {
        return false;
    }
    if (month1 < 1 || month1 > 12 || month2 < 1 || month2 > 12) {
        return false;
    }
    if (day1 < 1 || day1 > 31 || day2 < 1 || day2 > 31) {
        return false;
    }
    if (((month1 == 4 || month1 == 6 || month1 == 9 || month1 == 11) && day1 == 31) ||
        ((month2 == 4 || month2 == 6 || month2 == 9 || month2 == 11) && day2 == 31)) {
        return false;
    }
    if (((year1 % 4 == 0 && year1 % 100 != 0) || year1 % 400 == 0) ||
        ((year2 % 4 == 0 && year2 % 100 != 0) || year2 % 400 == 0)) {
        if ((month1 == 2 && day1 > 29) || (month2 == 2 && day2 > 29)) {
            return false;
        }
    }
    if (((year1 % 4 != 0 || (year1 % 100 == 0 && year1 % 400 != 0)) && month1 == 2 && day1 >= 29) ||
        ((year2 % 4 != 0 || (year2 % 100 == 0 && year2 % 400 != 0)) && month2 == 2 && day2 >= 29)) {
        return false;
    }

    if (hour1 < 0 || hour1 >= 24 || hour2 < 0 || hour2 >= 24) {
        return false;
    }
    if (minute1 < 0 || minute1 >= 60 || minute2 < 0 || minute2 >= 60) {
        return false;
    }
    if (second1 < 0 || second1 >= 60 || second2 < 0 || second2 >= 60) {
        return false;
    }

    return true;
}

long long CountDays(int year, int month, int day) {
    long long result = 0;
    int temp = year - 1;
    result += (temp / 400) * (97 * 366 + 303 * 365);
    result += (temp % 400) / 100 * (24 * 366 + 76 * 365);
    result += (temp % 100) / 4 * (366 + 3 * 365);
    result += (temp % 4) * 365;

    for (int i = 1; i <= 12; ++i) {
        if (i < month) {
            switch (i) {
                case 1: {
                    result += 31;
                    break;
                }
                case 2: {
                    if ((year % 4 == 0 && year % 100 != 0) || year % 400 == 0) {
                        result += 29;
                    } else {
                        result += 28;
                    }
                    break;
                }
                case 3: {
                    result += 31;
                    break;
                }
                case 4: {
                    result += 30;
                    break;
                }
                case 5: {
                    result += 31;
                    break;
                }
                case 6: {
                    result += 30;
                    break;
                }
                case 7: {
                    result += 31;
                    break;
                }
                case 8: {
                    result += 31;
                    break;
                }
                case 9: {
                    result += 30;
                    break;
                }
                case 10: {
                    result += 31;
                    break;
                }
                case 11: {
                    result += 30;
                    break;
                }
                case 12: {
                    result += 31;
                    break;
                }
            }
        }
    }

    result += day;

    return result;
}

long long CountSeconds(int hour, int minute, int second) {
    long long result = 0;
    result += hour * 3600;
    result += minute * 60;
    result += second;

    return result;
}

int main() {
    int n;
    cin >> n;
    long long result[n] = { 0 };

    int year1, month1, day1, hour1, minute1, second1, year2, month2, day2, hour2, minute2, second2;
    for (int i = 0; i < n; ++i) {
        cin >> year1;
        cin.get();
        cin >> month1;
        cin.get();
        cin >> day1;
        cin >> hour1;
        cin.get();
        cin >> minute1;
        cin.get();
        cin >> second1;
        cin >> year2;
        cin.get();
        cin >> month2;
        cin.get();
        cin >> day2;
        cin >> hour2;
        cin.get();
        cin >> minute2;
        cin.get();
        cin >> second2;

        if (isright(year1, month1, day1, hour1, minute1, second1, year2, month2, day2, hour2, minute2,
                    second2)) {
            long long days1, days2;
            days1 = CountDays(year1, month1, day1);
            days2 = CountDays(year2, month2, day2);
            long long seconds = 0;
            long long seconds1, seconds2;
            seconds1 = CountSeconds(hour1, minute1, second1);
            seconds2 = CountSeconds(hour2, minute2, second2);

            if (days1 > days2) {
                seconds = (days1 - days2) * 24 * 3600;
                seconds += seconds1;
                seconds -= seconds2;
            } else if (days1 < days2) {
                seconds = (days2 - days1) * 24 * 3600;
                seconds += seconds2;
                seconds -= seconds1;
            } else {
                if (seconds1 > seconds2) {
                    seconds = (seconds1 - seconds2);
                } else {
                    seconds = (seconds2 - seconds1);
                }
            }

            result[i] = seconds;
        } else {
            result[i] = -1;
        }
    }

    for (int i = 0; i < n; ++i) {
        cout << result[i] << endl;
    }

    return 0;
}