So if I purchase a ticket on Dec 30 tor travel on Jan 5 what qualifying year does the MQD apply towards?

I do a lot of back and forth to Florida and this might not impact me too much but it does mean the end of rollover. If I fly 60k a year before I would get 2 years of GM and then 1 year of PM which I thought was nice since it rewarded me for consistent loyalty over many years. Now I will never get PM for being a customer that consistently uses Delta despite my many options. It does enhance the MM annual status benefit and the value of gifted status earned by PMs and DMs though.