const runtime.maxWhen

5 uses

	runtime (current package)
		proc.go#L6051: 		if when := timeSleepUntil(); when < maxWhen {
		time.go#L291: const maxWhen = 1<<63 - 1
		time.go#L328: 		when = maxWhen
		time.go#L1092: 			next = maxWhen
		time.go#L1251: 	next := int64(maxWhen)