(b) In the case of a demand instrument upon its date or, if no date is stated, on the date of issue.

(2) A cause of action against the obligor of a demand or time certificate of deposit accrues upon demand, but demand on a time certificate may not be made until on or after the date of maturity.

(3) A cause of action against a drawer of a draft or an indorser of any instrument accrues upon demand following dishonor of the instru- ment. Notice of dishonor is a demand.

(4) Unless an instrument provides otherwise, interest runs at the rate provided by law for a judgment.
(a) In the case of a maker, acceptor or other primary obligor of a demand instrument, from the date of demand;
(b) In all other cases from the date of accrual of the cause of action.