Here you can find the source of getJulianDay(Calendar cal)
private static int getJulianDay(Calendar cal)
//package com.java2s; /*/* w ww . ja v a2 s. co m*/ * This source is part of the * _____ ___ ____ * __ / / _ \/ _ | / __/___ _______ _ * / // / , _/ __ |/ _/_/ _ \/ __/ _ `/ * \___/_/|_/_/ |_/_/ (_)___/_/ \_, / * /___/ * repository. * * Copyright (C) 2014 Benoit 'BoD' Lubek (BoD@JRAF.org) * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ import java.util.Calendar; import android.text.format.Time; public class Main { private static int getJulianDay(Calendar cal) { Time time = new Time(); time.set(cal.getTimeInMillis()); return Time.getJulianDay(cal.getTimeInMillis(), time.gmtoff); } }