const runtime.maxWhen

5 uses

	runtime (current package)
		proc.go#L5461: 		if when := timeSleepUntil(); when < maxWhen {
		time.go#L164: const maxWhen = 1<<63 - 1
		time.go#L193: 		t.nextwhen = maxWhen
		time.go#L859: 			t.when = maxWhen
		time.go#L1033: 	next := int64(maxWhen)