export declare function isMonday(timezone: string, date?: Date): boolean;
export declare function isTuesday(timezone: string, date?: Date): boolean;
export declare function isWednesday(timezone: string, date?: Date): boolean;
export declare function isThursday(timezone: string, date?: Date): boolean;
export declare function isFriday(timezone: string, date?: Date): boolean;
export declare function isSaturday(timezone: string, date?: Date): boolean;
export declare function isSunday(timezone: string, date?: Date): boolean;