在Go中，给定位置名称，我们如何确定该位置的当前时间？ [关闭]

We can't use the offset returned by Zone():

package main

import "fmt"
import "time"

func main() {
    loc, _ := time.LoadLocation("America/Los_Angeles")
    t := time.Date(2015,04,12,19,23,0,0,loc)
    t2 := time.Date(2015,03,1,19,23,0,0,loc)
    _, offset := t.Zone()
    _, offset2 := t.Zone()
    fmt.Printf("t1: %v  offset: %d
", t, offset)
    fmt.Printf("t2: %v  offset: %d
", t2, offset2)
}

This returns:

t1: 2015-04-12 19:23:00 -0700 PDT  offset: -25200
t2: 2015-03-01 19:23:00 -0800 PST  offset: -25200

The offset does not reflect daylight savings. Is parsing manually the offset after formatting a time instance the only option (-0700 and -0800)?

We can retrieve the current time with time.Now(), but using .In() simply changes the location without adjusting the hours and minutes.

Fix the bug in your program. For example,

package main

import "fmt"
import "time"

func main() {
    loc, _ := time.LoadLocation("America/Los_Angeles")
    t := time.Date(2015, 04, 12, 19, 23, 0, 0, loc)
    t2 := time.Date(2015, 03, 1, 19, 23, 0, 0, loc)
    _, offset := t.Zone()
    _, offset2 := t2.Zone()
    fmt.Printf("t1: %v  offset: %d
", t, offset)
    fmt.Printf("t2: %v  offset: %d
", t2, offset2)
}

Output:

t1: 2015-04-12 19:23:00 -0700 PDT  offset: -25200
t2: 2015-03-01 19:23:00 -0800 PST  offset: -28800