Negotiable Instruments Act, 1881 — section 19

19. Instruments payable on demand. A promissory note or bill of exchange is payable on demand,

(a)where it is expressed to be so, or to be payable at sight or on presentment; or

(b)where no time for payment is specified in it ; or

(c)where the note or bill accepted or indorsed after it is overdue, as regards the person accepting or indorsing it.] 3