diff --git a/genshin/models/genshin/chronicle/abyss.py b/genshin/models/genshin/chronicle/abyss.py
index 42bf533a..3b73613d 100644
--- a/genshin/models/genshin/chronicle/abyss.py
+++ b/genshin/models/genshin/chronicle/abyss.py
@@ -116,7 +116,10 @@ def __nest_ranks(cls, values: typing.Dict[str, typing.Any]) -> typing.Dict[str,
 
     @pydantic.validator("start_time", "end_time", pre=True)
     def __parse_timezones(cls, value: str) -> datetime.datetime:
-        return datetime.datetime.fromtimestamp(int(value), tz=CN_TIMEZONE)
+        try:
+            return datetime.datetime.fromtimestamp(int(value), tz=CN_TIMEZONE)
+        except ValueError:
+            return datetime.datetime.fromisoformat(value)
 
 
 class SpiralAbyssPair(APIModel):