Fix unit test for #5.
Fix unit test for #5.

The Windows 64-bit time boundary at 3001-01-01 needed to be moved
forward by 1 day to account for local time zone ambiguity. We don’t
know in local time exactly where the 64-bit boundary is, so move
forward one day to ensure we are testing on the far side of it.

trygve-isaacson/code-vault,trygve-isaacson/code-vault,trygve-isaacson/code-vault,trygve-isaacson/code-vault