from datetime import (
    datetime,
    tzinfo,
)
from typing import Callable

import numpy as np

from pandas._typing import npt

# imported from dateutil.tz
dateutil_gettz: Callable[[str], tzinfo]

def tz_standardize(tz: tzinfo) -> tzinfo: ...
def tz_compare(start: tzinfo | None, end: tzinfo | None) -> bool: ...
def infer_tzinfo(
    start: datetime | None,
    end: datetime | None,
) -> tzinfo | None: ...
def get_dst_info(
    tz: tzinfo,
) -> tuple[npt.NDArray[np.int64], npt.NDArray[np.int64], str]: ...
def maybe_get_tz(tz: str | int | np.int64 | tzinfo | None) -> tzinfo | None: ...
def get_timezone(tz: tzinfo) -> tzinfo | str: ...
def is_utc(tz: tzinfo | None) -> bool: ...