def parseDay(dia: str):
    """
    Convert Spanish date to English date
    Parameters
    ----------
    dia String with Spanish date, format 'dd Mmm yyyy'

    Returns
    -------
    String with English date, format 'yyyy/mm/dd'
    """
    meses = {'ene': '01', 'feb': '02', 'mar': '03', 'abr': '04', 'may':
        '05', 'jun': '06', 'jul': '07', 'ago': '08', 'set': '09', 'sep':
        '09', 'oct': '10', 'nov': '11', 'dic': '12'}
    d, m, y = dia.split()
    return y + '/' + meses[m[:3].lower()] + '/' + d
