Fix test with dodgy date check

[adam-fowler]

No description provided.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 80.73%. Comparing base (bfe6d6f) to head (12c6b63).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #654      +/-   ##
==========================================
+ Coverage   80.72%   80.73%   +0.01%     
==========================================
  Files          83       83              
  Lines        7352     7352              
==========================================
+ Hits         5935     5936       +1     
+ Misses       1417     1416       -1     

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