export declare function dateToUtcString(date: Date): string;
export declare const parseRfc3339DateTime: (value: unknown) => Date | undefined;
export declare const parseRfc3339DateTimeWithOffset: (
  value: unknown
) => Date | undefined;
export declare const parseRfc7231DateTime: (value: unknown) => Date | undefined;
export declare const parseEpochTimestamp: (value: unknown) => Date | undefined;