I have seen this 'new' date format before, 2048, 7 means the year xx20, 48th week of 52 weeks in a year, on the 7th day, Sunday. So, 2336, 1 or 233601 means the year 2023, the 36th week, Monday.
New Year Day is marked as NY2101 or for a two days holiday NYD2101 and NYD2102.
Smell nice.
