The changing dates could be especially confusing for newer taxpayers.
A recent survey by H&R Block showed that 66 percent of millennials did not know taxes are due this year on the 17th, even though they were given the choice of the 15th, 16th and 17th.
In 2019, Tax Day will return to the usual April 15 and will stay there until the calendar works in your favor again and gives you a few extra days to get your taxes done.
This story is part of CNBC’s Tax Week coverage as the filing season wraps up on April 17. Stay tuned for more stories on tax tips and savings opportunities.
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