Use current timezone for date formatting

AppleLibs/Utils/Date/PatternDateFormatter.swift

@@ -9,11 +9,11 @@ import Foundation
 
 public extension DateFormatter
 {
-    static func pattern(_ pattern: String) -> DateFormatter {
+    static func pattern(_ pattern: String, timeZone: TimeZone = TimeZone.current) -> DateFormatter {
         let formatter = DateFormatter()
         formatter.dateFormat = pattern
         formatter.calendar = Calendar(identifier: .iso8601)
-        formatter.timeZone = TimeZone(secondsFromGMT: 0)
+        formatter.timeZone = timeZone
         return formatter
     }
 }