@Oberon, you list is incredible.
It shows that peonies may be late for a whole month; that is, the spring may be late. I wasn't aware of this.
Usually, my TP Hoki bloomed first, but after the horrible winter 2013/2014, High Noon bloomed first, Hoki second. At first I didn't believe; I thought that I made a mistake. Then I found the pictures and compared the dates. Yes, the peonies had decided to changed the order. That year, Hoki decided to wait a bit and bloom after High Noon. I am curious what will happen this year.
Another interesting thing happened last year. High Noon started opening buds in the fall. Now I understand how High Noon may bloom twice (in spring and later in the fall.) The plant needs a bit colder summer or early fall weather to go dormant and, then, if the weather gets milder, it will rebloom. Last year High Noon had started opening the buds in the fall, but the frost came, and several buds got damaged. I'll have to wait and see if the blooms from these buds will be disfigured.
The weather is getting better ovehere, and the peonies are growing fast now. Snow Lotus's flower buds are already swelling. The biggest surprise is the Guardian of the Monastery. Its buds are big and purple and they look like little monsters. I'll post pictures later today.