var time.startNano

4 uses

	time (current package)
		time.go#L1230: 		return subMono(runtimeNano()-startNano, t.ext)
		time.go#L1240: 		return subMono(t.ext, runtimeNano()-startNano)
		time.go#L1341: var startNano int64 = runtimeNano() - 1
		time.go#L1352: 	mono -= startNano