1F307 (sunset over buildings)

equally sunrise

1F306 (cityscape at dusk)

equally at dawn
no visible sun

1F305 (sunrise)

mostly over water
equally sunset

1F304 (sunrise over mountains)

is it just Japan that assumes mountains (or sea?) are in the east and cities are in the west??

in any case, the sunsets can't be reliably distinguished globally, although some have a slightly darker sky

1F303 (night with stars)

dark-sky versions make the cityscape very hard to see, light-sky versions are confusing so a crescent moon is added

cf cityscape at dusk
foggy (may have cityscape)
sunset over buildings
bridge at night
milky way

sunrise over mountains
sunrise
Mount Fuji
volcano

office building

the earliest Docomo emoji set included 'Night'

1F301 (foggy)

modifier: maybe
uncertainty
approximately

1F18E (AB blood type)

bloodtypes A, B, AB and O (if BA were available, the combinatorics would be better)

test: test test test test test test test test test test test test test test test test test test test test test test test test test test test test test test test test test test test test test test test test test test test test test test test test test test

1227

U+1F18E

🆎

missing

negative squared ab

V6.0ʲ

emoji

ab, blood, symbol, word

🆎

🆎

🆎

U+1F18E

\xF0\x9F\x86\x8E

negative squared ab