diff --git a/main/main.cpp b/main/main.cpp
index a63f691..62534bf 100644
--- a/main/main.cpp
+++ b/main/main.cpp
@@ -218,20 +218,128 @@ int main() {
         //QDateTime s(QDate(2024, 5, 29), QTime()); // wednesday
         //QDateTime s(QDate(2024, 5, 30), QTime()); // thursday
 
-        QDateTime s(QDate(2024, 5, 31), QTime()); // friday
-        QDateTime end;
-        QDateTime start = s.addSecs(7*60*60);
-
         CalcState cs;
-        for (int i = 600; i <= 600; i += 10) {
-        // for (int i = 70; i <= 70; i += 10) {
-            double cost = i;
-            if ((cs = compute_duration_for_parking_ticket(&cfg, start, cost, end))) {      // return value
-                qCritical() << "start" << start.toString(Qt::ISODate);
-                qCritical() << " cost" << cost;
-                qCritical() << " end" << end.toString(Qt::ISODate) << endl;
-            } else {
-                qCritical() << "ERROR CalcState" << cs.toString();
+        double const x = 30.0/7.0;
+        double cost;
+        int durationInMinutes;
+        int offsetInMinutes = 0;
+
+        for (int day = Qt::Monday; day <= Qt::Sunday; ++day) {
+            QDateTime s(QDate(2024, 5, 19 + day), QTime()); // 20: (whit) monday,..., 26: sunday
+            QDateTime end;
+
+            for (int minutes = 0; minutes < 1440; ++minutes) {
+            //for (int minutes = 0; minutes < 1440; ++minutes) {
+                QDateTime start = s.addSecs(minutes * 60);
+                QDateTime effectiveStart = start;
+
+                if (day >= Qt::Monday && day <= Qt::Friday) {
+                    if (start.time() < QTime(8,0,0)) {
+                        effectiveStart.setTime(QTime(8,0,0));
+                    } else
+                    if (start.time() <= QTime(12,0,0)) {
+                        effectiveStart = start;
+                    } else
+                    if (start.time() < QTime(13,30,0)) {
+                        effectiveStart.setTime(QTime(13,30,0));
+                    } else
+                    if (start.time() <= QTime(18,0,0)) {
+                        effectiveStart = start;
+                    } else {
+                        effectiveStart = start.addDays(1);
+                        effectiveStart.setTime(QTime(8,0,0)); // saturday
+                    }
+                } else
+                if (day == Qt::Saturday) {
+                    if (start.time() < QTime(8,0,0)) {
+                        effectiveStart.setTime(QTime(8,0,0));
+                    } else
+                    if (start.time() <= QTime(12,0,0)) {
+                        effectiveStart = start;
+                    } else {
+                        effectiveStart = start.addDays(2);
+                        effectiveStart.setTime(QTime(8,0,0)); // monday
+                    }
+                } else
+                if (day == Qt::Sunday) {
+                    effectiveStart = start.addDays(1);
+                    effectiveStart.setTime(QTime(8,0,0)); // monday
+                }
+
+                for (int i = 70; i <= 600; i += 10) {
+                // for (int i = 70; i <= 70; i += 10) {
+                    cost = i;
+                    if ((cs = compute_duration_for_parking_ticket(&cfg, start, cost, end))) {      // return value
+                        durationInMinutes = truncf(x * (i/10));
+                        offsetInMinutes = 0;
+                        if (day >= Qt::Monday && day <= Qt::Friday) {
+                            if (effectiveStart.time() >= QTime(8, 0, 0) && effectiveStart.time() <= QTime(12, 0, 0)) {
+                                if (effectiveStart.date().dayOfWeek() == start.date().dayOfWeek()) {
+                                    if (effectiveStart.time().addSecs(durationInMinutes * 60) > QTime(12, 0, 0)) {
+                                        offsetInMinutes = 90; // 12:00 - 13:30
+                                    }
+                                } else {
+                                    offsetInMinutes = 14 * 60; // 18:00 -> next day, 8:00
+                                    if (effectiveStart.time().addSecs(durationInMinutes * 60) <= QTime(12, 0, 0)) {
+                                        offsetInMinutes = 0;
+                                    } else {
+                                        if (effectiveStart.date().dayOfWeek() == Qt::Saturday) {
+                                            offsetInMinutes = (12 + 24 + 8) * 60;
+                                        } else {
+                                            offsetInMinutes = 90;
+                                        }
+                                    }
+                                }
+                            } else
+                            if (effectiveStart.time() >= QTime(13, 30, 0)) {
+                                if (effectiveStart.time().addSecs(durationInMinutes * 60) > QTime(18, 0, 0)) {
+                                    offsetInMinutes = 14 * 60; // 18:00 -> next day, 8:00
+                                }
+                            }
+                        } else
+                        if (day == Qt::Saturday) {
+                            if (effectiveStart.time() >= QTime(8, 0, 0) && effectiveStart.time() <= QTime(12, 0, 0)) {
+                                if (effectiveStart.date().dayOfWeek() == start.date().dayOfWeek()) {
+                                    if (effectiveStart.time().addSecs(durationInMinutes * 60) > QTime(12, 0, 0)) {
+                                        offsetInMinutes = (12 + 24 + 8) * 60; // monday, 8:00
+                                    }
+                                } else {
+                                    offsetInMinutes = (12 + 24 + 8) * 60; // monday, 8:00
+                                    if (effectiveStart.time().addSecs(durationInMinutes * 60) <= QTime(12, 0, 0)) {
+                                        offsetInMinutes = 0;
+                                    } else {
+                                        offsetInMinutes = 90;
+                                    }
+                                }
+                            }
+                        } else
+                        if (day == Qt::Sunday) {
+                            if (effectiveStart.time() >= QTime(8, 0, 0) && effectiveStart.time() <= QTime(12, 0, 0)) {
+                                if (effectiveStart.time().addSecs(durationInMinutes * 60) > QTime(12, 0, 0)) {
+                                    offsetInMinutes = 90;
+                                }
+                            }
+                        }
+
+                        if ((durationInMinutes + offsetInMinutes) == (effectiveStart.secsTo(end) / 60)) {
+                            continue;
+                        }
+                    }
+
+                    if (!cs) {
+                        qCritical() << "ERROR CalcState" << cs.toString() << endl;
+                    } else {
+                        qCritical() << "SUCCESS";
+                    }
+                    qCritical() << "start ............................" << start.toString(Qt::ISODate);
+                    qCritical() << "effectiveStart ..................." << effectiveStart.toString(Qt::ISODate);
+                    qCritical() << "cost ............................." << cost;
+                    qCritical() << "durationMinutes .................." << durationInMinutes;
+                    qCritical() << "offsetInMinutes .................." << offsetInMinutes;
+                    qCritical() << "effectiveStart.secsTo(end) / 60 .." << effectiveStart.secsTo(end) / 60;
+                    qCritical() << "end .............................." << end.toString(Qt::ISODate) << endl;
+                    exit(-1);
+                }
             }
         }
     }