Hi, on Pharo5 and "latest"(?) stable release of Garage it is implemented as: timeStampFrom: aStream "ByteStream" | dt | dt := self dateTimeFrom: aStream. ^ dt ifNil: [nil] ifNotNil: [dt asTimeStamp] There is no implementor of asTimeStamp. From what I read is a TimeStamp is a reduced range and asTimeStamp can be omitted? thank you holger