Supporters of The World Calendar do not deny that their system is at odds with the traditions of a significant portion of the world's population, but argue that Worldsdays and Leapyear Days can be treated as "double" holidays by those who wish to maintain the seven-day week sequence.
Pristalice svjetskog kalendara ne poriču da je njihov sustav u sukobu s tradicijama dobrog dijela svjetskog stanovništva, ali tvrde da bi oni koji žele održati sedmodnevni tjedan mogli smatrati Worldsday i Leapyear Day kao "duple" svete dane.