Yes. Secretariat reads each class's syllabus from Canvas, or one you upload, and puts its dates on your list, so work Canvas got wrong or never listed lands on the right day.
How often
On Free, syllabus dates are read once a semester. Student Pro reads them again on every update, so a revised syllabus shows up.
No syllabus on Canvas?
If a class has no syllabus on Canvas and a classmate in the exact same course uploaded one, its dates are offered to you, one tap to add. Only the dated items are shared, never the file or who shared it. You can turn sharing off in Settings, Your classes.
When the syllabus and Canvas disagree
The syllabus usually wins, with a couple of exceptions so you're never late. See what happens when they disagree.
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