Predawn instrument / 000°
longitude.day
turn the day one degree east
Act I / Prime Meridian
the hinge of morning
Brass ticks wake along the line at Greenwich. The ocean paper is still blue-black, but every mark is ready for the arriving sun.
sunrise bearing083°declination+18.7equation−03m
Act II / Dawn Band
coral at the rim
The day ribbon thickens, passes behind place names, and turns coast fragments briefly porcelain before continuing east.
LisbonAccraReykjavík
Act III / Local Noon
shadow at its smallest
A sundial needle contracts toward the meridian. Gold numerals float like foil pressed into the warm map surface.
104°
Act IV / Long Shadows
violet enters the seam
Latitude ticks cool to polar cyan while dusk lengthens sideways, sliding over the hatching of the sleeping ocean.
Act V / Dateline Seam
tomorrow stitched to today
The ribbon is interrupted by violet thread. One side keeps the spent light; the other begins the ceremony again.