amanda sabatini writes: > > Hi, > > The follow command does not work with the specifics date: 1986-10-25; > 1987-10-25; 1989-10-15; 1992-10-25; 1991-10-20; 1995-10-15; 2006-11-05. > > date +%d --date="1986-10-25"
The date command never actually works on dates alone. There is always a time attached to its calculations, even when it's not necessary for the output format you requested. When you don't specify a time with the --date option, the command guesses that you meant 00:00:00. That turns out to be a bad guess in this case, since 00:00:00 didn't exist on those days. All of those are dates on which the Brazil/East time zone shifted into daylight savings time, jumping from 23:59:59 the previous day to 01:00:00 on the day you mentioned. You can avoid this problem by adding 12:00:00 to the requested date. $ TZ=Brazil/East date +%d --date="1986-10-25" date: invalid date `1986-10-25' $ TZ=Brazil/East date +%d --date="1986-10-25 12:00:00" 25 -- Alan Curry
