<P> For most observant Christians , Sunday is observed as a day of worship and rest , holding it as the Lord 's Day and the day of Christ 's resurrection . In some Muslim countries and Israel , Sunday is the first work day of the week . According to the Hebrew calendars and traditional Christian calendars , Sunday is the first day of the week . However , according to the International Organization for Standardization ISO 8601 , Sunday is the seventh and last day of the week . </P>
<P> For most observant Christians , Sunday is observed as a day of worship and rest , holding it as the Lord 's Day and the day of Christ 's resurrection . In some Muslim countries and Israel , Sunday is the first work day of the week . According to the Hebrew calendars and traditional Christian calendars , Sunday is the first day of the week . However , according to the International Organization for Standardization ISO 8601 , Sunday is the seventh and last day of the week . </P>
who made monday the first day of the week
who made monday the first day of the week
International Organization for Standardization ISO 8601
International Organization for Standardization ISO 8601