Below are the dates for, among others, Boss's Day 2012 and Boss's Day 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
Boss's Day 2012	October 16, 2012	Tuesday	42	153
Boss's Day 2013	October 16, 2013	Wednesday	42	518
Boss's Day 2014	October 16, 2014	Thursday	42	883
Boss's Day 2015	October 16, 2015	Friday	42	1248
Boss's Day 2016	October 17, 2016	Monday	42	1615
Boss's Day 2017	October 16, 2017	Monday	42	1979
Boss's Day 2018	October 16, 2018	Tuesday	42	2344
Boss's Day 2019	October 16, 2019	Wednesday	42	2709
Boss's Day 2020	October 16, 2020	Friday	42	3075
Boss's Day 2021	October 16, 2021	Saturday	41	3440
Boss's Day 2022	October 17, 2022	Monday	42	3806

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

See also the 2012 Calendar.