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Fix the Syndication Feed RFC822 DateTimeParser #99194

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Original file line number Diff line number Diff line change
Expand Up @@ -92,28 +92,28 @@ private static bool Rfc822DateTimeParser(string dateTimeString, out DateTimeOffs
DateTimeOffset theTime;
string[] parseFormat =
{
"ddd, dd MMMM yyyy HH:mm:ss zzz",
"dd MMMM yyyy HH:mm:ss zzz",
"ddd, dd MMM yyyy HH:mm:ss zzz",
"dd MMM yyyy HH:mm:ss zzz",
"ddd, d MMMM yyyy HH:mm:ss zzz",
"d MMMM yyyy HH:mm:ss zzz",
"ddd, d MMM yyyy HH:mm:ss zzz",
"d MMM yyyy HH:mm:ss zzz",

"ddd, dd MMMM yyyy HH:mm zzz",
"dd MMMM yyyy HH:mm zzz",
"ddd, dd MMM yyyy HH:mm zzz",
"dd MMM yyyy HH:mm zzz",
"ddd, d MMMM yyyy HH:mm zzz",
"d MMMM yyyy HH:mm zzz",
"ddd, d MMM yyyy HH:mm zzz",
"d MMM yyyy HH:mm zzz",

// The original RFC822 spec listed 2 digit years. RFC1123 updated the format to include 4 digit years and states that you should use 4 digits.
// Technically RSS2.0 specifies RFC822 but it's presumed that RFC1123 will be used as we're now past Y2K and everyone knows better. The 4 digit
// formats are listed first for performance reasons as it's presumed they will be more likely to match first.
"ddd, dd MMMM yy HH:mm:ss zzz",
"dd MMMM yyyy HH:mm:ss zzz",
"ddd, dd MMM yy HH:mm:ss zzz",
"dd MMM yyyy HH:mm:ss zzz",

"ddd, dd MMMM yy HH:mm zzz",
"dd MMMM yyyy HH:mm zzz",
"ddd, dd MMM yy HH:mm zzz",
"dd MMM yyyy HH:mm zzz"
"ddd, d MMMM yy HH:mm:ss zzz",
"d MMMM yy HH:mm:ss zzz",
"ddd, d MMM yy HH:mm:ss zzz",
"d MMM yy HH:mm:ss zzz",

"ddd, d MMMM yy HH:mm zzz",
"d MMMM yy HH:mm zzz",
"ddd, d MMM yy HH:mm zzz",
"d MMM yy HH:mm zzz"
};

if (DateTimeOffset.TryParseExact(wellFormattedString, parseFormat,
Expand Down