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common: implement jdnLordOfNight

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Quantum 2025-07-08 22:29:05 -04:00
parent d0ddad26c5
commit fb576a4a5e
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common/src/mayan.ts
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@ -113,3 +113,7 @@ export type LordOfNight = 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9;
export function formatLordOfNight(lordOfNight: LordOfNight): string { export function formatLordOfNight(lordOfNight: LordOfNight): string {
return `G${lordOfNight}`; return `G${lordOfNight}`;
} }
export function jdnLordOfNight(jdn: number): LordOfNight {
return (jdn % 9 + 15) % 9 + 1 as LordOfNight;
}