Only 2-digit numbers can fit into project countdowns

Logged in as 422196@mail.muni.cz:

Reproduction steps:

1. Go to https://kafe.fi.muni.cz/auth/lemmafimuni/ and observe the time countdown for Filmový festival FI MU #25 (closed)

Expected result:
156
days

Actual result:
15
6
days