TYP: check_untyped_defs core.tools.datetimes
pandas\core\tools\datetimes.py:299: error: Item "DatetimeIndex" of "Union[DatetimeArray, DatetimeIndex]" has no attribute "tz_convert"
pandas\core\tools\datetimes.py:310: error: Item "DatetimeIndex" of "Union[DatetimeArray, DatetimeIndex]" has no attribute "tz_localize"
pandas\core\tools\datetimes.py:829: error: Incompatible types in assignment (expression has type "str", variable has type "List[str]")
pandas\core\tools\datetimes.py:838: error: Incompatible types in assignment (expression has type "str", variable has type "List[Any]")
pandas\core\tools\datetimes.py:1010: error: Argument 1 to "append" of "list" has incompatible type "None"; expected "time"
pandas\core\tools\datetimes.py:1035: error: Argument 1 to "append" of "list" has incompatible type "None"; expected "time"
LGTM Thanks @simonjayhawkins 