randate.go

package main

import (
    "fmt"
    "time"
    "math/rand"
)

func randate() time.Time {
    min := time.Date(1970, 1, 0, 0, 0, 0, 0, time.UTC).Unix()
    max := time.Date(2070, 1, 0, 0, 0, 0, 0, time.UTC).Unix()
    delta := max - min

    sec := rand.Int63n(delta) + min
    return time.Unix(sec, 0)
}

func main() {
	fmt.Println("Random:", randate()) /* go run produces same date every time */
}