BUG: Increase range of dates for holiday calculations (#27790)

Author: rhstanton

doc/source/whatsnew/v1.0.0.rst

@@ -413,6 +413,9 @@ Other
 - Bug in :meth:`Series.diff` where a boolean series would incorrectly raise a ``TypeError`` (:issue:`17294`)
 - :meth:`Series.append` will no longer raise a ``TypeError`` when passed a tuple of ``Series`` (:issue:`28410`)
 - Fix corrupted error message when calling ``pandas.libs._json.encode()`` on a 0d array (:issue:`18878`)
+- Fix :class:`AbstractHolidayCalendar` to return correct results for
+  years after 2030 (now goes up to 2200) (:issue:`27790`)
+
 
 .. _whatsnew_1000.contributors:
 

pandas/tests/groupby/test_categorical.py

@@ -784,7 +784,8 @@ def test_categorical_no_compress():
 
 def test_sort():
 
-    # http://stackoverflow.com/questions/23814368/sorting-pandas-categorical-labels-after-groupby  # noqa: E501
+    # http://stackoverflow.com/questions/23814368/sorting-pandas-
+    #        categorical-labels-after-groupby
     # This should result in a properly sorted Series so that the plot
     # has a sorted x axis
     # self.cat.groupby(['value_group'])['value_group'].count().plot(kind='bar')

pandas/tests/tseries/holiday/test_calendar.py

@@ -2,14 +2,15 @@
 
 import pytest
 
-from pandas import DatetimeIndex
+from pandas import DatetimeIndex, offsets, to_datetime
 import pandas.util.testing as tm
 
 from pandas.tseries.holiday import (
     AbstractHolidayCalendar,
     Holiday,
     Timestamp,
     USFederalHolidayCalendar,
+    USLaborDay,
     USThanksgivingDay,
     get_calendar,
 )
@@ -81,3 +82,19 @@ def test_calendar_observance_dates():
 def test_rule_from_name():
     us_fed_cal = get_calendar("USFederalHolidayCalendar")
     assert us_fed_cal.rule_from_name("Thanksgiving") == USThanksgivingDay
+
+
+def test_calendar_2031():
+    # See gh-27790
+    #
+    # Labor Day 2031 is on September 1. Saturday before is August 30.
+    # Next working day after August 30 ought to be Tuesday, September 2.
+
+    class testCalendar(AbstractHolidayCalendar):
+        rules = [USLaborDay]
+
+    cal = testCalendar()
+    workDay = offsets.CustomBusinessDay(calendar=cal)
+    Sat_before_Labor_Day_2031 = to_datetime("2031-08-30")
+    next_working_day = Sat_before_Labor_Day_2031 + 0 * workDay
+    assert next_working_day == to_datetime("2031-09-02")

pandas/tseries/holiday.py

@@ -346,7 +346,7 @@ class AbstractHolidayCalendar(metaclass=HolidayCalendarMetaClass):
 
     rules = []  # type: List[Holiday]
     start_date = Timestamp(datetime(1970, 1, 1))
-    end_date = Timestamp(datetime(2030, 12, 31))
+    end_date = Timestamp(datetime(2200, 12, 31))
     _cache = None
 
     def __init__(self, name=None, rules=None):