How to Convert a Time Offset to a Timezone and Location in Go?

Converting a Time Offset to a Location/Timezone in Go

When working with time data that includes time offsets but lacks location information, it is necessary to create a usable time.Location object to accurately record the offset and output the time relative to the user's location.

In Go, one can use the FixedZone function to specify a location with a fixed offset relative to UTC. For instance, to create a location for a 11 offset, use the following code:

loc := time.FixedZone("UTC+11", +11*60*60)

Once the location is defined, set it to the desired time object:

t = t.In(loc)

This will adjust the time object to the specified location and its time offset.

Running the following code exemplifies this process:

package main

import (
    "fmt"
    "time"
)

func main() {
    loc := time.FixedZone("UTC+11", +11*60*60)

    t := time.Now()
    fmt.Println(t)
    fmt.Println(t.Location())

    t = t.In(loc)
    fmt.Println(t)
    fmt.Println(t.Location())

    fmt.Println(t.UTC())
    fmt.Println(t.Location())
}

Output:

2009-11-10 23:00:00 +0000 UTC m=+0.000000001
UTC
2009-11-11 10:00:00 +1100 UTC+11
UTC+11
2009-11-10 23:00:00 +0000 UTC
UTC+11

As seen, the original time (in UTC) is adjusted to the specified offset location. The output also shows that the time.UTC() method returns the original time in UTC, while the time.Location() method returns the adjusted location information.

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