 | Two shifts each day, an early and late |
 | Typical period covered each day = 16 hours (for example, early:06:00-14:00
and late: 14:00-22:00) |
 | Up to 7 days of the week can be covered |
 | Common example covering 5 days, Monday to Friday: two teams alternating
between a week of earlies and a week of lates |
 | Note that, in the above example, the Friday late shift is often shortened
in order to generate the required number of contracted hours per week.
Sometimes it is not worked at all (4.5 day cover or 9-day fortnight) |