time: i find some problems when using addDate to do date calculation

[Gao-Vidor]

Go version

go version go1.20.5 darwin/amd64

go env :

GO111MODULE="auto"
GOARCH="amd64"
GOBIN=""
GOCACHE="/Users/Library/Caches/go-build"
GOENV="/Users/Library/Application Support/go/env"
GOEXE=""
GOEXPERIMENT=""
GOFLAGS=""
GOHOSTARCH="amd64"

What did i do?

package main

import (
"fmt"
"time"
)

func main() {
d := time.Date(2023, 1, 30, 23, 0, 0, 0, time.Local)
dd := d.AddDate(0, 1, 0)
fmt.Println(dd)
}

What did i see happen?

2023-03-02 23:00:00 +0000 UTC

What did i expect to see?

In my intuitive understanding, I believe the output should be 2023-02-28 (9) 23:00:00 +0000 UTC

[ALTree]

This is working as intended. From the AddDate documentation:

AddDate normalizes its result in the same way that Date does, so, for example, adding one month to October 31 yields December 1, the normalized form for November 31.

Closing here since this is not a bug.