Handle more invalid dates

Fixes #617

reader/date/parser.go

@@ -50,6 +50,7 @@ var dateFormats = []string{
 	"Monday, 02 January 2006 15:04:05",
 	"Monday, January 02, 2006 - 3:04pm",
 	"Monday, January 2, 2006 - 3:04pm",
+	"Mon, 01/02/2006 - 15:04",
 	"Mon, 2 January 2006 15:04 MST",
 	"Mon, 2 January 2006, 15:04 -0700",
 	"Mon, 2 January 2006, 15:04:05 MST",
@@ -110,6 +111,7 @@ var dateFormats = []string{
 	"Mon, 02 Jan 2006",
 	"Mon, 02 Jan 06 15:04:05 MST",
 	"Mon, 02 Jan 2006 3:04 PM MST",
+	"January 02 2006 03:04:05 PM",
 	"January 2, 2006 3:04 PM",
 	"January 2, 2006, 3:04 p.m.",
 	"January 2, 2006 15:04:05 MST",

reader/date/parser_test.go

@@ -129,6 +129,9 @@ func TestParseWeirdDateFormat(t *testing.T) {
 		"Tue 16 Feb 2016, 23:16:00 EDT",
 		"Tue, 16 Feb 2016 23:16:00 EDT",
 		"Tue, Feb 16 2016 23:16:00 EDT",
+		"March 30 2020 07:02:38 PM",
+		"Mon, 30 Mar 2020 19:53 +0000",
+		"Mon, 03/30/2020 - 19:19",
 	}
 
 	for _, date := range dates {