public static void main(String[] args) {
double doubleDate = 0.;
if (args.length == 0) {
while (doubleDate < (mjd * 3)) {
if (dateIsDodgy(doubleDate)) System.out.print(doubleDate + " is dodgy " + "\r");
doubleDate += .25;
}
} else {
String input = args[0];
doubleDate = Format.toDouble(input);
if (doubleDate != 0.) System.out.println(convertMJD(doubleDate));
else System.out.println(convertMJD(input));
}
}
/**
* Converts TT in YYYY MM DD.ddd format to MJD (days).
*
* @param yyyymmdd_ddd TT in YYYY MM DD.ddd format.
* @return TT in MJD (days).
*/
@SuppressWarnings("fallthrough")
public static double convertMJD(String yyyymmdd_ddd) {
StringTokenizer stringTokenizer = new StringTokenizer(yyyymmdd_ddd, " ,: ;/-");
GregorianCalendar calendar = new GregorianCalendar();
int year = 0;
// monthIndex for January is 0, for December is 11
int monthIndex = 0;
double day = 0;
String monthString = "";
double resultInDays = 0.;
if (stringTokenizer.hasMoreTokens()) year = Format.toInt(stringTokenizer.nextToken());
if (stringTokenizer.hasMoreTokens()) {
monthString = stringTokenizer.nextToken().toLowerCase();
while (!monthString.startsWith(MONTH_NAMES[monthIndex].toLowerCase())) monthIndex++;
}
if (stringTokenizer.hasMoreTokens()) day = Format.toDouble(stringTokenizer.nextToken());
// Add the remaining 44 days of 1858 (November 18 - December 31 inclusive)
resultInDays += 44;
if (year > MJD_0_YEAR) {
for (int i = MJD_0_YEAR + 1; i < year; i++) {
resultInDays += 365;
if (calendar.isLeapYear(i)) resultInDays++;
}
} else if (year <= MJD_0_YEAR) {
for (int i = MJD_0_YEAR; i >= year; i--) {
resultInDays -= 365;
if (calendar.isLeapYear(i)) resultInDays--;
}
}
switch (monthIndex) {
case 12:
resultInDays += 31;
case 11:
resultInDays += 30;
case 10:
resultInDays += 31;
case 9:
resultInDays += 30;
case 8:
resultInDays += 31;
case 7:
resultInDays += 31;
case 6:
resultInDays += 30;
case 5:
resultInDays += 31;
case 4:
resultInDays += 30;
case 3:
resultInDays += 31;
case 2:
resultInDays += 28;
case 1:
resultInDays += 31;
}
if ((calendar.isLeapYear(year)) && (monthIndex > 1)) resultInDays++;
resultInDays += day;
resultInDays = Math.rint(resultInDays * 1E7) / 1E7;
// just to be on the safe side
resultInDays = makeMJD(resultInDays);
return resultInDays;
}
