(rare) computer

calculation / forecast

(uranography) Winter Triangle - a bright asterism of the northern winter sky. Its corners are the stars Betelgeuse, Procyon, and Sirius.

(uranography) Summer Triangle - a bright asterism of the northern summer sky. Its corners are the stars Altair, Deneb, and Vega.

computer science

computational geometry

a triangle (polygon)

spreadsheet - manual calculation of digits in the grids / (computing) spreadsheet - automatic calculation of digits in the grids by using computer.

(computer science) time complexity

Human day; also known as 七草(ななくさ)の節句(せっく) (nanakusanosekku, “the festival of seven herbs”); one of the five seasonal festivals (五節句 (gosekku). It is celebrated on January 7.