Front cover month "missing"?

Some department labs https://www.utupub.fi/bitstream/handle/10024/148428/Thesis_Alina_Dubinina.pdf?sequence=1&isAllowed=y and other departments https://www.overleaf.com/latex/templates/utu-math-and-stat-luk-ja-pro-gradu-tutkielmapohja/hrbmrtcdsymn seem to have the month on the front cover.

We should harmonize our policy and the easiest way might be to add the month.