const time.alpha

7 uses

	time (current package)
		time.go#L1408: 	if startSec != alpha {
		zoneinfo.go#L66: 	alpha = -1 << 63  // math.MinInt64
		zoneinfo.go#L134: 		tx:         []zoneTrans{{alpha, 0, false, false}},
		zoneinfo.go#L135: 		cacheStart: alpha,
		zoneinfo.go#L155: 		start = alpha
		zoneinfo.go#L174: 		start = alpha
		zoneinfo_read.go#L315: 		tx = append(tx, zoneTrans{when: alpha, index: 0})