SO from the man page on date I can do current=`TZ=":America/Indianapolis" date` echo $current current=`TZ=":America/Los_Angeles" date ` echo $current And I get correct data. LA is 3 hours earlier. But doing this: current=`TZ=":America/Indianapolis" date +%s` echo $current current=`TZ=":America/Los_Angeles" date +%s` echo $current I get the same data - its not 3 hours different. What am I not doing correct ? Thanks, Jerry
On 2/17/21 1:57 PM, Jerry Geis wrote:> SO from the man page on date I can do > > current=`TZ=":America/Indianapolis" date` > echo $current > current=`TZ=":America/Los_Angeles" date ` > echo $current > > And I get correct data. LA is 3 hours earlier. But doing this: > > current=`TZ=":America/Indianapolis" date +%s` > echo $current > current=`TZ=":America/Los_Angeles" date +%s` > echo $current > > I get the same data - its not 3 hours different. > > What am I not doing correct ? > > Thanks, > > JerryPer the date(1) man page, ?????? %s???? seconds since 1970-01-01 00:00:00 UTC Thus,%s is independent of the timezone....relative to UTC. And you don't need any of those double-quotes.
On Wed, Feb 17, 2021 at 01:57:50PM -0500, Jerry Geis wrote:> > SO from the man page on date I can do > > current=`TZ=":America/Indianapolis" date` > echo $current > current=`TZ=":America/Los_Angeles" date ` > echo $current > > And I get correct data. LA is 3 hours earlier. But doing this: > > current=`TZ=":America/Indianapolis" date +%s` > echo $current > current=`TZ=":America/Los_Angeles" date +%s` > echo $current > > I get the same data - its not 3 hours different. > > What am I not doing correct ?Check the man page for 'date'. %s is "seconds since 1970-01-01 00:00:00 UTC". Regardless of the time zone, the time in LA will still be the same number of seconds since Midnight, January 1st, 1970 in UTC as it was in Indianapolis. -- Jonathan Billings <billings at negate.org>
On Wed, Feb 17, 2021 at 1:57 PM Jerry Geis <jerry.geis at gmail.com> wrote:> SO from the man page on date I can do > > current=`TZ=":America/Indianapolis" date` > echo $current > current=`TZ=":America/Los_Angeles" date ` > echo $current > > And I get correct data. LA is 3 hours earlier. But doing this: > > current=`TZ=":America/Indianapolis" date +%s` > echo $current > current=`TZ=":America/Los_Angeles" date +%s` > echo $current > > I get the same data - its not 3 hours different. > > What am I not doing correct ? > > Thanks, > > Jerry >Hi All - I did figure this out. I was close the first time - but just not right. FROM_DATE_TIME=`TZ="America/Los_Angeles" date --date '120 sec ago' +'%Y-%m-%d %H:%M:%S'` TO_DATE_TIME=`TZ="$America/Los_Angeles" date --date '1 sec ago' +'%Y-%m-%d %H:%M:%S'` and my server is set for Indianapolis time. The above worked. Thanks! Jerry