import { z } from "zod";
export type Zone = string & {
    readonly __brand: "Zone";
};
export declare const UTC: Zone;
export declare const isZone: (value: string) => value is Zone;
export declare const asZone: (value: string | undefined) => Zone | undefined;
export declare const ZoneSchema: z.ZodString & z.ZodType<Zone, string, z.core.$ZodTypeInternals<Zone, string>>;
export declare const localZone: () => Zone;
export type CivilDay = string & {
    readonly __brand: "CivilDay";
};
export declare const CivilDaySchema: z.ZodString;
export declare const civilDayIn: (at: number, zone: Zone) => CivilDay;
export declare const utcDayOf: (at: number) => CivilDay;
export declare const wallClockIn: (at: number, zone: Zone) => string;
export declare const asCivilDay: (value: string | undefined) => CivilDay | undefined;
export interface WallRule {
    readonly cron: string;
    readonly tz: Zone;
}
export declare const cronOptions: (tz: Zone) => {
    timezone: string;
};
export declare const nextDayStartIn: (at: number, zone: Zone) => number;
export declare const wallClockInstant: (day: CivilDay, hours: number, minutes: number, zone: Zone) => number;
export declare const sameClock: (a: Zone, b: Zone, at?: number) => boolean;
export declare const zoneLabel: (rule: Zone, reader: Zone, at?: number) => string | undefined;
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