612

Currently of equally dubious importance, 612 is the arc number of Hivebent, just as 413 is the arc number of Homestuck. Most of its appearances in Hivebent mirror the appearances of 413 in Homestuck.

Appearances as a date

 * The Hivebent game began on the 12th of June, 2010 - in other words, 6/12/2010 - just as Homestuck began on 4/13/2009.
 * While the Alternian calendar does not directly correlate to the Earth calendar, the story is set on Karkat Vantas's wriggling day: the 12th bilunar perigee of the 6th dark season's equinox, in the same way that Homestuck takes place on John Egbert's birthday, April 13th.

Appearances as a time

 * The mysterious box under the Doomsday Scale counts down from 6:12. Likewise, most countdowns in Homestuck count down from 4:13 or variations thereon.

Appearances as a number

 * There are 12 trolls, each one 6 solar sweeps old, who will split into two teams of 6 to play the Alternian equivalent to Sburb.
 * Each troll's first name and surname has 6 letters, for a grand total of 12 letters in their full names.
 * The Alternian Frog Temple has 6 pillars, just as the Earth one has 4. This implies the Troll's Incipisphere will also have 6 Planets.
 * Alternian architecture gives all windows 12 panes (which retroactively makes Earth's 4 pane windows a reference to 413).