Given a dt, return whether this exchange is open at the given dt.

        Parameters
        ----------
        dt: pd.Timestamp
            The dt for which to check if this exchange is open.

        Returns
        -------
        bool
            Whether the exchange is open on this dt.

def is_open_on_minute(self, dt):
        """
        Given a dt, return whether this exchange is open at the given dt.

        Parameters
        ----------
        dt: pd.Timestamp
            The dt for which to check if this exchange is open.

        Returns
        -------
        bool
            Whether the exchange is open on this dt.
        """
        return is_open(self.market_opens_nanos, self.market_closes_nanos,
                       dt.value)