gs_quant.datetime.date.is_business_day¶

is_business_day(dates, calendars=(), week_mask=None)[source]¶

Determine whether each date in dates is a business day

Parameters:

dates (Union[date, Iterable[date]]) – The input date or dates
calendars (Union[str, Tuple[str, ...]]) – Calendars to use for holidays
week_mask (Optional[str]) – Which days are considered weekends (defaults to Saturday and Sunday)

Return type:

Union[bool, Tuple[bool]]

Returns:

True/False if dates is a single date. A tuple indicating True/False for each date if dates is an iterable

Examples

>>> import datetime as dt
>>> is_business_day(dt.date.today())
>>> is_business_day(dt.date(2019, 7, 4), calendars=('NYSE',))