The Week & Month Calendar designed by Karl Palmen in 2018 is a variant of the Symmetry454 Calendar with ISO week date rules in force and no day of month number. It uses the traditional month names unaltered but instead of a day of month number, has a week of the month name, which is provided as either a Roman or Greek letter (name), i.e. A through E or Alpha through Epsilon. While the natural order of date elements in English is kept with the smallest one first, e.g. Saturday Epsilon November 2018, numerical dates may use ISO-like conventions, e.g. 2018-11-5-6.
The day of month numbers would normally be omitted from the layout and do not form part of any calendar date. The Epsilon week only occurs in 5-week month.
The months of February, May, August and November have 5 weeks every year along with December in a year with 53 ISO weeks. The other months have 4 weeks. Week Alpha January coincides with ISO week 1.