# [Perl 6], 93 bytes

<!-- language-all: lang-perl6 -->

    .put for (("[@]"if Date.today~~/12.(0?<{^26}>)$/),"[ ]"xx ^$0,+$0^..25)[*;*].pick(*).rotor(5)

[Try it online!][TIO-k46bufwi]

[Perl 6]: https://github.com/nxadm/rakudo-pkg
[TIO-k46bufwi]: https://tio.run/##K0gtyjH7/1@voLREIS2/SEFDQynaIVYpM03BJbEkVa8kPyWxsq5O39BIT8PA3qY6zsis1k5TRV9TRylaIVapokIhTsVAR1vFIE5Pz8hUM1rLWitWryAzOVtDS1OvKL8kv0jDVPP/fwA "Perl 6 – Try It Online"