Theme 1 – HTTPS is over‑engineered for static, read‑only sites
"The site owners could do all of that even with HTTPS, and no-one would revoke their certs." — Joker_vD
Theme 2 – Paradox games deliberately sidestep messy calendar logic
"EU3 and EU4 at least had no leap years. I assume 1, 2 and 5 are the same." — Macha
Theme 3 – Calendar reform was historically political and localized
"It’s actually worse than that. It wasn’t always whole coubtries who decided to adopt (or not) but cities and sometimes people within cities". — jauco