<P> The international standard ISO 8601 for representation of dates and times , states that Sunday is the seventh and last day of the week . This method of representing dates and times unambiguously was first published in 1988 . </P>
<P> The international standard ISO 8601 for representation of dates and times , states that Sunday is the seventh and last day of the week . This method of representing dates and times unambiguously was first published in 1988 . </P>
when did sunday became the seventh day of the week
when did sunday became the seventh day of the week
1988
1988