corn.go

c := cron.New()

c.AddFunc("30 * * * *", func() {
    fmt.Println("Every hour on the half hour") 
})

c.AddFunc("30 3-6,20-23 * * *", func() { 
  fmt.Println(".. in the range 3-6am, 8-11pm") 
})

c.AddFunc("CRON_TZ=Asia/Tokyo 30 04 * * * *", func() { 
  fmt.Println("Runs at 04:30 Tokyo time every day") 
})

c.AddFunc("@hourly", func() { 
  fmt.Println("Every hour") 
})

c.AddFunc("@every 1h30m", func() { 
  fmt.Println("Every hour thirty") 
})

c.Start()
..
// Funcs are invoked in their own goroutine, asynchronously.
...
// Funcs may also be added to a running Cron
c.AddFunc("@daily", func() { fmt.Println("Every day") })
..
// Inspect the cron job entries' next and previous run times.
inspect(c.Entries())
..
c.Stop()  // Stop the scheduler (does not stop any jobs already running).