it("should fail on invalid full ISO8601 string", async () => {
    const noDates: ReadonlyArray<string> = ["2018-10-13", "2018-10-13 00:00"];
    noDates.forEach(noDate => {
      const validation = UtcOnlyIsoDateFromString.decode(noDate);
      expect(isLeft(validation)).toBeTruthy();