Qt5-Code-Examples/datetime/juliandate.cpp at main · ag-cpp/Qt5-Code-Examples · GitHub

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#include <QTextStream>
#include <QDate>
int main(void) {
   QTextStream out(stdout);
   QDate cd = QDate::currentDate();
   out << "Gregorian date for today: " << cd.toString(Qt::ISODate) << endl;
   out << "Julian day for today: " << cd.toJulianDay() << endl;