Sort an arrayList based on time using collections

Question

I am having times in different time formats stored in my arrayList they are

Tue, 05 Sep 2017 09:25:05 +0100                               
Tue, 05 Sep 2017 01:28:06 -0700           
Thu, 31 Aug 2017 17:51:58 GMT                    
Tue, 05 Sep 2017 08:31:18 GMT                          
04 Sep 2017 21:34:51                 
Tue, 05 Sep 2017 03:28:17 -0400

now I want to convert different time format in a single format and sort the list based on time using collections.sort

List<NewsModel> newsList = new ArrayList<>();

And My object Class NewsModel is like this

public class NewsModel {

    String headlines;
    String weblink;
    String imagelink;




    public String getHeadlines() {
        return headlines;
    }

    public void setHeadlines(String headlines) {
        this.headlines = headlines;
    }

    public String getWeblink() {
        return weblink;
    }

    public void setWeblink(String weblink) {
        this.weblink = weblink;
    }

    public String getImagelink() {
        return imagelink;
    }

    public void setImagelink(String imagelink) {
        this.imagelink = imagelink;
    }

    public String getShortnews() {
        return shortnews;
    }

    public void setShortnews(String shortnews) {
        this.shortnews = shortnews;
    }

    public String getSource() {
        return source;
    }

    public void setSource(String source) {
        this.source = source;
    }

    public String getDate() {
        return date;
    }

    public void setDate(String date) {
        this.date = date;
    }

    String shortnews;
    String source;
    String date;
}