def Date.of_z.fin
import bend-kit-time@0.3.0.0/time.bend as Timeimport Base
227def Date.of_z.fin(lo: Bool, +y: U32, +mp: U32, +d: U32) -> Date:
228 match lo:
229 case True{}:
230 Date{(y - 400 : U32), (mp + 3 : U32), d}
231 case False{}:
232 Date{(y - 399 : U32), (mp - 9 : U32), d}