Here you can find the source of formatDateForGMT(ZonedDateTime moonDate)
public static String formatDateForGMT(ZonedDateTime moonDate)
//package com.java2s; /*/* w w w .ja va 2 s. c om*/ * Copyright 2011 Brad Parks * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ import java.time.ZoneOffset; import java.time.ZonedDateTime; import java.time.format.DateTimeFormatter; public class Main { /** * Useful date-to-string formatting which I found myself using a lot * * @return the date in GMT timezone */ public static String formatDateForGMT(ZonedDateTime moonDate) { DateTimeFormatter df = DateTimeFormatter.ofPattern("yyyy-MM-dd"); return moonDate.withZoneSameInstant(ZoneOffset.UTC).format(df); } }