Below are the dates for, among others, Halloween 2012 and Halloween 2013.
You can also see on which day the holiday falls and how many days it is until this holiday.

Holiday	Date		Week number	Number of days to go
Halloween 2012	October 31, 2012	Wednesday	44	270
Halloween 2013	October 31, 2013	Thursday	44	635
Halloween 2014	October 31, 2014	Friday	44	1000
Halloween 2015	October 31, 2015	Saturday	44	1365
Halloween 2016	October 31, 2016	Monday	44	1731
Halloween 2017	October 31, 2017	Tuesday	44	2096
Halloween 2018	October 31, 2018	Wednesday	44	2461
Halloween 2019	October 31, 2019	Thursday	44	2826
Halloween 2020	October 31, 2020	Saturday	44	3192
Halloween 2021	October 31, 2021	Sunday	44	3557
Halloween 2022	October 31, 2022	Monday	44	3922

See besides 'Halloween' even more holidays, click on one of the links below.
2012 Holidays   •   2013 Holidays   •   2014 Holidays   •   2015 Holidays

See also the 2012 Calendar.