export type Meridiem = "AM" | "PM";
export declare const HOURS_12: readonly number[];
export declare const HOURS_24: readonly number[];
export declare const pad2: (value: number) => string;
export declare const isTwelveHour: (use24Hour: boolean | undefined, dateFormat: string | undefined) => boolean;
export declare const minuteOptions: (step: number | undefined, current: number | null) => number[];
export declare const displayHour: (hour24: number, twelveHour: boolean) => number;
export declare const meridiemOf: (hour24: number) => Meridiem;
export declare const toHour24: (hour12: number, meridiem: Meridiem) => number;
export declare const atTime: (day: Date, hour24: number, minute: number) => Date;