X-Git-Url: http://git.squeep.com/?a=blobdiff_plain;ds=inline;f=lib%2Fpleroma%2Fweb%2Fcommon_api%2Futils.ex;h=345c5d10d2a15ecb9b59ffb577b900c5a13c20cd;hb=a8cd859ef930d968bebeb2afb373ed002e8824f7;hp=aee19a840de04aa2c1cc9e5d1e73a0a6299557f7;hpb=0d56adc16b0234744d569dd61d16322ef89589dc;p=akkoma

diff --git a/lib/pleroma/web/common_api/utils.ex b/lib/pleroma/web/common_api/utils.ex
index aee19a840..345c5d10d 100644
--- a/lib/pleroma/web/common_api/utils.ex
+++ b/lib/pleroma/web/common_api/utils.ex
@@ -328,20 +328,27 @@ defmodule Pleroma.Web.CommonAPI.Utils do
   end
 
   def to_masto_date(%NaiveDateTime{} = date) do
-    date
-    |> NaiveDateTime.to_iso8601()
-    |> String.replace(~r/(\.\d+)?$/, ".000Z", global: false)
+    # NOTE: Elixir’s ISO 8601 format is a superset of the real standard
+    # It supports negative years for example.
+    # ISO8601 only supports years before 1583 with mutual agreement
+    if date.year < 1583 do
+      "1970-01-01T00:00:00Z"
+    else
+      date
+      |> NaiveDateTime.to_iso8601()
+      |> String.replace(~r/(\.\d+)?$/, ".000Z", global: false)
+    end
   end
 
   def to_masto_date(date) when is_binary(date) do
     with {:ok, date} <- NaiveDateTime.from_iso8601(date) do
       to_masto_date(date)
     else
-      _ -> ""
+      _ -> "1970-01-01T00:00:00Z"
     end
   end
 
-  def to_masto_date(_), do: ""
+  def to_masto_date(_), do: "1970-01-01T00:00:00Z"
 
   defp shortname(name) do
     with max_length when max_length > 0 <-