/**
 * compare between two dates object only by the actual date and not with time
 */
export declare function isSameDates(date1: any, date2: any): boolean;
/**
 * genereate UTC time without timestamp - only date
 */
export declare function getDateDayTime(date: Date): number;
/**
 * checks string in format YYYY-MM-DD
 */
export declare function isDateString(date: string): boolean;
/**
 * checks string in format YYYY-MM-DD hh:mm:ss
 */
export declare function isDateTimeString(date: string): boolean;