Short for Unified Extensible Firmware Interface, UEFI is a specification that defines a more modernized model for the interface between computer operating systems and platform firmware during the boot, or start-up, process.hort for Unified Extensible Firmware Interface, UEFI is a specification that defines a more modernized model for the interface between computer operating systems and platform firmware during the boot, or start-up, process.
The original Roman calendar is believed to have been a lunar calendar, which may have been based on one of the Greek lunar calendars. As the time between new moons averages 29.5 days its months were constructed to be either hollow (29 days) or full (30 days).he calendar year originally began on 1 March, as is shown by the names of the six months following June (Quintilis = fifth month, Sextilis = sixth month, September = seventh month, etc.).
Later in 713BC, Numa Pompilius reformed the calendar of Romulus. He took 1 day from each of the six months with 30 days[1]. Now he made total 57 unaccounted days (51 plus these 6) into two months Ianuarius (January) and Februarius (February). January was given 29 days, and February had 28 days.