Sullivan Equipment Sales showed the following.

	2017
Jan.	15	Sold $25,600 of merchandise for $30,200 to JanCo; terms 3/5, n/15.
	16	Wrote off Feduns account in the amount of $15,600.
	20	Collected the amount owing from the January 15 sale.
Mar.	1	Accepted a $12,240, 60-day, 7% note dated this day in granting Parker Holdings a time extension on its pastdue account.
Apr.	15	Sold merchandise costing $62,600 for $72,200 to customers who used their Visa credit cards. Visa charges a 1% fee and deposits the cash electronically into the retailers account immediately at the time of sale.
	?	Parker Holdings honoured the note dated March 1.
Nov.	1	Accepted a $25,200, three-month, 6% note dated this day in granting Grant Company a time extension on its past-due account.
Dec.	31	Sullivans year-end. Interest was accrued on outstanding notes receivable.
	31	Bad debts are based on an aging analysis that estimated $9,700 of accounts receivable are uncollectible. Allowance for Doubtful Accounts showed an unadjusted credit balance of $1,660 on this date.
	2018
	?	Grant Company dishonoured its note dated November 1, 2017.
Mar.	5	Recovered $1,500 from Derek Holston that was previously written off.
	14	Wrote off the Grant Company account.

Required: a. Determine the maturity dates of the March 1 and November 1 notes.