- 18August 18, 1912No events
- 19August 19, 1912No events
- 20August 20, 1912No events
- 21August 21, 1912No events
- 22August 22, 1912No events
- 23August 23, 1912No events
- 24August 24, 1912No events
A=ANNUAL
M=MONTHLY
Q=QUARTERLY
DISCLAIMER: THESE DUE DATES ARE SUBJECT TO CHANGE. WE WILL DO OUR BEST TO KEEP THIS CALENDAR UP TO DATE WITH THE EVERCHANGING DEADLINES. ANY STATE FILING DUE DATES ARE IN REFERENCE SPECIFICALLY TO THE WASHINGTON STATE DEPARTMENT OF REVENUE.