tour: Day of Week - Switch case exercise

[santiagofern]

Context: https://go.dev/tour/flowcontrol/10

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As a user of this training, I would expect this:

package main

import (
    "fmt"
    "time"
)

func main() {
    fmt.Println("When's Saturday?")
    today := time.Now().Weekday()
    switch time.Saturday {
    case today + 0:
        fmt.Println("Today.")
    case today + 1:
        fmt.Println("Tomorrow.")
    case today + 2:
        fmt.Println("In two days.")
    default:
        fmt.Println("Too far away.")
    }
}

To print out when saturday is which reached the default case eventhough it is Friday.

[pashchenkoromak]

As pointed in https://github.com/golang/tour/issues/1249 , there is, in description of excersice: Note: Time in the Go playground always appears to start at 2009-11-10 23:00:00 UTC, a value whose significance is left as an exercise for the reader.