def METHOD_NAME(source, target):
    src = DataArray(
        date_range("2004-01-01", "2004-07-30", freq="D", calendar=source),
        dims=("time",),
        name="time",
    )
    tgt = DataArray(
        date_range("2004-01-01", "2004-07-30", freq="D", calendar=target),
        dims=("time",),
        name="time",
    )
    da_src = DataArray(
        np.linspace(0, 1, src.size), dims=("time",), coords={"time": src}
    )
    conv = interp_calendar(da_src, tgt)
    assert_identical(tgt.time, conv.time)
    np.testing.assert_almost_equal(conv.max(), 1, 2)
    assert conv.min() == 0