April 1 was a holiday through 2006. 2006: 4851-54 ended before, 4855 started before and intersected, 4856-59 started after.
2005: 4654-62 ended before, 4663-70 and 4671-73 started before and intersected, 4674-75 started after. 2004: 4557-62 ended before, 4563-65 started before and intersected, 4566-67 started after. 2003: 4470-72 ended before, 4473-74 started before and intersected, 4475-78 started after.
