Speicher210 / business-hours

                $end = $interval->getEnd()->toSeconds() + $offset;

                // Current day.

                if ($start < 86400 && $end > 0) {

                    $startForCurrentDay = \max($start, 0);

                    $endForCurrentDay = \min($end, 86400);

                    $dayOfWeek = $day->getDayOfWeek();

                    $interval = new TimeInterval(

                        TimeBuilder::fromSeconds($startForCurrentDay),

                        TimeBuilder::fromSeconds($endForCurrentDay)

                    );

                    $tmpDays[$dayOfWeek][] = $interval;

                }

                // Previous day.

                if ($start < 0) {

                }

                // Previous day.

                if ($start < 0) {

                    $startForPreviousDay = 86400 + $start;

                    $endForPreviousDay = \min(86400, 86400 + $end);

                    $dayOfWeek = self::getPreviousDayOfWeek($day->getDayOfWeek());

                    $interval = new TimeInterval(

                        TimeBuilder::fromSeconds($startForPreviousDay),

                        TimeBuilder::fromSeconds($endForPreviousDay)

                    );

                    $tmpDays[$dayOfWeek][] = $interval;

                }

                // Next day.

                if ($end > 86400) {

                }

                // Next day.

                if ($end > 86400) {

                    $startForNextDay = \max(0, $start - 86400);

                    $endForNextDay = $end - 86400;

                    $dayOfWeek = self::getNextDayOfWeek($day->getDayOfWeek());

                    $interval = new TimeInterval(

                        TimeBuilder::fromSeconds($startForNextDay),

                        TimeBuilder::fromSeconds($endForNextDay)

                    );

                    $tmpDays[$dayOfWeek][] = $interval;

                }

            }

        }