Ad Kalendas Graecas
Idiomatic translations of "Ad Kalendas Graecas"
Meanings of "Ad Kalendas Graecas"
At the Greek calends. Also known as 'Ad calendas graecas' does not exist. The first day of the month was a feature of the Roman calendar, the Greeks did not have that, calends. It was on the calends that interest on borrowed money had to be paid so for debtors they were 'tristes calendae', or 'the unhappy calends'.
Something that was to happen 'ad calendas graecas' would then never occur.
на неопределенный срок, никогда: рус.- после дождичка в четверг (досл.: до греческих календ, которых у греков не было)