N.Y. Local Finance Law § 82.00: Twenty day period of limitation

§ 82.00 Twenty day period of limitation. After the publication of a

resolution, summary of such resolution or certificate together with such

a notice, the validity of the obligations authorized thereby may be

contested only if:

1. Such obligations were authorized for an object or purpose for which

the municipality, school district or district corporation is not

authorized to expend money, or

2. The provisions of law which should have been complied with at the

date of the publication of such resolution, summary of such resolution

or certificate were not substantially complied with, and an action, suit

or proceeding contesting such validity is commenced within twenty days

after such publication, or

3. Such obligations were authorized in violation of the provisions of

the constitution.