N.Y. Comp. Codes R. & Regs. tit. 9, § 4221.1 – Time for overnight entries.

(a) In the absence of conditions or notice to the contrary, entries for overnight races are to be made at the office of the clerk of the course by 2 p.m. on the day before the race.
(b) All entries and declarations of horses eligible for administration of furosemide pursuant to section 4236.2(b) of this Title are required to denote the use of furosemide on the entry form.