Posts in May 1, 2019

Ultimo means “previous” (usually month). Instant means “this” or “current” (usually month). When the Bureau of Pensions wrote on 4 January and said “Your letter of 15th ultimo,” they were referring to a letter of 15 December. When they wrote on 10 December and said “Your letter of the 4th instant,” they meant the 4th of December.