Create Date Exceptions and Categories

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25Live Fields vs SIS Data
Key LYNX Settings
Setting Up Translation Tables
Mapping Event Names, Categories, and Attributes
Best Practices for Optimizer Partitions and Preferences
Standard Meeting Patterns
At the Start of Each Term
Roll courses/exams over from previous term
Initialize reference data in LYNX
Create extract sets
Tips for Import Extract Sets
Tips for Export Extract Sets
Create date exceptions
Test extract sets and import data into 25Live
Review errors and conflicts
Placing Classes Using Optimizer
Finalize bindings between sections
Review Best Practices for Optimizer Runs
Run the Optimizer to find placements
Tweak settings to improve your Optimizer results
Ongoing Throughout Term
Updates Throughout the Term
Ongoing Maintenance for LYNX
Finishing a Term
Final Exams
Tips For Final Exams in LYNX

Each import extract set has two areas for individual configurations which apply just to classes in that set. These settings affect every class in the extract set.

You can customize extract sets this way at any time, but classes already imported to 25Live will not be affected unless you update them with another import.

Date Exceptions

Date exceptions handle the specific dates that don't behave like others in a meeting pattern–like holidays or unexpected snow days. They come in three types:

  • Exclusions remove dates from a meeting pattern
    • Example: classes don't meet during a week of spring break
  • Make-up Days add dates to a meeting pattern by copying the schedule of an existing date
    • Example: an extra day is added to the term in June, with all the same classes as a specific day in May
  • Conversions both add and remove dates by "cut and pasting" one date to replace another
    • Example: no classes meet on Monday for Memorial Day, meeting on Tuesday instead of the normal schedule

Typically, you'll map out all your holidays ahead of time and add them as exclusions or conversions. Make-up days typically get added later under special circumstances.

If you plan to create exams with LYNX because your SIS doesn't handle exams itself, typically you

For more information, see Setting Date Exceptions.


You can add event categories to an entire extract set by configuring them in the Settings menu for the extract set. This is most useful if you have multiple non-overlapping extract sets (see above) and you want something in 25Live to indicate their membership.