const golang.org/x/mod/module.PseudoVersionTimestampFormat

2 uses

	golang.org/x/mod/module (current package)
		pseudo.go#L49: const PseudoVersionTimestampFormat = "20060102150405"
		pseudo.go#L58: 	segment := fmt.Sprintf("%s-%s", t.UTC().Format(PseudoVersionTimestampFormat), rev)

The pages are generated with Golds v0.8.4. (GOOS=linux GOARCH=amd64)