These dates are the personal data gathering by Garnie Bokelman through 2003. She lived on the East side of Eagle Lake. The Association started recording them from there. Thank you Garnie.
| Off | On | |
| 2020 | April 6 | December 19 |
| 2019 | April 20 | December 2 |
| 2018 | May 1 | November 28 |
| 2017 | March 8 (Earliest off) | December 14 |
| 2016 | March 16 | December 10 |
| 2015 | April 6 | December 19 |
| 2014 | April 24 | November 21 |
| 2013 | May 3 (Latest off) | November 27 |
| 2012 | March 19 | December 10 |
| 2011 | April 14 | December 6 |
| 2010 | April 2 | December 2 |
| 2009 | April 15 | December 10 |
| 2008 | April 24 | December 7 |
| 2007 | April 6 | December 4 |
| 2006 | April 7 | December 1 |
| 2005 | April 7 | No data |
| 2004 | April 1 | December 14 |
| 2003 | April 6 | November 6 |
| 2002 | April 16 | November 24 |
| 2001 | April 22 | December 2 |
| 2000 | April 1 | December 19 |
| 1999 | April 3 | No data |
| 1998 | March 31 | December 20 (Latest on) |
| 1997 | April 21 | November 17 |
| 1996 | April 22 | November 15 |
| 1995 | April 9 | November 21 |
| 1994 | April 13 | November 30 |
| 1993 | April 17 | November 24 |
| 1992 | April 5 | No data |
| 1991 | April 13 | November 2 (Earliest on) |
| 1990 | April 5 | No data |
| 1989 | April 20 | No data |
| 1988 | April 12 | December 2 |
| 1987 | April 12 | November 8 |
| 1986 | April 7 | November 15 |
| 1985 | April 12 | November 13 |
| 1984 | April 11 | December 1 |
| 1983 | April 12 | November 28 |
| 1982 | April 11 | November 22 |
| 1981 | April 17 | November 21 |
| 1980 | April 15 | November 30 |
| 1979 | April 26 | December 1 |
| 1978 | No data | No data |
| 1977 | No data | No data |
| 1976 | April 18 | November 30 |
| 1975 | April 22 | November 27 |
| 1974 | April 19 | November 13 |
| 1973 | No data | No data |
| 1972 | March 31 | November 15 |
