S P R I N G
W
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 		–Night
------
+Day 		+Day = –Night

midspring
equinox

 +Day
------
–Night 		S
U
M
M
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R

Max Night
------------
Min Day

   midwinter   
solstice
night twilight
sunrise
dawn
 morning

midnight

  +  noon
evening

dusk
sunset
twilight

 afternoon

Max Day
------------
Min Night

 midsummer 
solstice

+Night
------
–Day

+Night = –Day

midautumn
equinox

–Day
------
+Night
A U T U M N
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