Darkest Eclipse Holiday (#20070)

https://forums.aurorastation.org/topic/2839-wwwadhomaichroniclecomnews/page/6/#comment-177901
> Astronomers have announced that on the day 31 of October, Raskara's
anomalous orbit will cause a total eclipse with the two suns. This event
is known as the Shi-rra Arr'Kahata, the Darkest Eclipse in folklore

Adds the darkest eclipse to holidays (just for this year).

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Co-authored-by: Ben10083 <Ben10083@users.noreply.github.com>

code/game/gamemodes/events/holidays/holidays.dm

@@ -123,7 +123,9 @@ var/global/Holiday = null
 				if(9)							Holiday = "K'lax Technology Day"
 				if(16)							Holiday = "Galatean Federation Day"
 				if(27)							Holiday = "New Kingdom of Adhomai Day of Rightful Restoration"
-				if(31)							Holiday = "Halloween"
+				if(31)
+					Holiday = "Halloween"
+					if(YY == 24)  				Holiday = "Halloween and the day of Shi-rra Arr’Kahata"
 
 		if(11)	//Nov
 			switch(DD)