The Sun spends more time near tropics than it does near the equator. Maybe Winter/Summer should be 4 months, and Spring/Autumn 2 months.
https://rl.se/zenith-calendar
-Winter: From Oct24 to Feb17 (roughly 4 months) the Sun travels from -12deg to -23deg back to -12deg latitude
-Spring: From Feb17 to Apr20 (roughly 2 months) the Sun travels from -12deg to +12 latitude
-Summer: From Apr20 to Aug21 (roughly 4 months) the Sun travels from +12deg to +23deg back to +12deg latitude
-Autumn: From Aug21 to Oct24 (roughly 2 months) the Sun travels from +12deg to -12 latitude
Not only is Summer 4 months, but the Sun stays in the sky higher and for well over half the day.
Furthermore for most of the time the Sun is closer to 23deg than at 12 deg:
-1 month after the Sun passes the equator the sun is 1/2 way to the tropic line
-10 days after that the Sun is 2/3 the way to the tropic line
-10 days after that the Sun is 4/5 the way to the tropic line
Then for about the next 80 days the Sun stays 4/5 of the way to the tropic line! It does this 80 day stint 2 times a year, so for almost half a year!
