I have three Apricots growing here. Two are 4 years old and one is 3 years old. I think two are Moonpark and one is Gold Crop or vice versa. So this year two of them, different varieties, bloom, set fruit and are in full leaf now with apricots about the size of Jaw Breakers while the third tree just busted open it's leaf blooms and has tiny leaf spikes coming out. These things are only 100' apart and it is a month and a week dormant behind the others? Now that is strange. I could maybe see if it was the one different variety, but it isn't. It is the same as one of the other two.
BTW, only one of my pears flowered this year and it was a poor showing.