Here is
1. the table and graph of the JAXA measure of Arctic sea ice extent maxima.
The date of maximum is an extremely early 23 Feb, and is distorted by a 218k increase on that day followed by a 239k decrease on the following day. So far no signs of JAXA adjusting this odd data (possibly caused by the sensors being fooled by odd surface conditions off the southern tip of Greenland?)
2. And ditto for NSIDC sea ice area (5 day trailing average) data, that gives the maxima as 25 Feb.