yard climate markers?

maybe...certainly different enough to get my attention and have me go back over some records and photos stored on the portable hard drive...

i found the first bloom on the imported new york strawberries on the twelfth of this month...in 2019 i found the first one on the twenty-third of april...eleven days earlier this year...and in 2020 i found the first bloom on the twenty-first of april...nine days earlier this year...

i just now found the first jerusalem artichoke ( don't worry about the detritus on top of the plant...it certainly won't )...in 2019 it was the twenty-fifth of april and in 2020 the thirtieth so this year it is eight and thirteen days earlier respectively...could they have been up earlier in 2019 and 2020 and i just mised them? doubtlessly posible...but then this year's could have been earlier as well...however i am interested and observant enough that it wouldn't have been off by more than a day or two...the usda quietly changed my hardiness zone a couple of years ago and it just may be that the plants in my yard are validating that change.