Shell Programming and Scripting

I need to convert the given datetime from PST to UTC, i gone through multiple forum examples but everywhere it mentioned about converting the server datetime. So could someone help me on this.

I will be getting arguments for my script in the format of yyyymmddhh (eg:2015101004 - it will be pst), so now i need to convert it into UTC with the same format.

So for 2015101010 (PST) I need the output as (2015101017) UTC. Could someone through some lights here.

Thanks.

What operating system and shell are you using?

And, what is the source of a timestamp that is producing a time on October 10th that is in PST rather than PDT? And the difference between PST and UTC is 8 hours; not 7. It looks like your example is trying to convert PDT or MST to UTC; not PST to UTC.

Yes you are right my timestamp is in PDT and i want to convert it into UTC.
I will be getting this timestamp from another script with YYYYMMDDHH format and I am using linux bash shell.

Basically i am going to call some api to get some details but in the target system we have the data in UTC that's the reason I am trying to convert my PDT timestamp to UTC.

Thanks

Disregarding midnight transition as well as month/year end, what keeps you from trying

Code:

DT=2015101010
echo $(( DT + 7 ))
2015101017

Just some comments. Time is variable according to the time the time was seen.

There's a reason why you want all times in UTC, but even so, to get time based context into some kind of local representation means you can always do simple math (that evil daylight savings thing).

I guess what I'm trying to say is that in order to do this relatively well you may need to have time context depending on how far back the dates go. Simple math will work as long as we haven't been playing with time (again, talking primarily about daylight savings).

Even if this is fairly recent data, you may still have to account for daylight savings for those times if they cross those days. But like I said, those simple calculations become a bit harder if you cross a rule change for daylight savings.

Enjoy!

Oh.. and time is just a displacement, if you can write programs that don't care about what we call "time"... do it. But obviously we've given meaning to time... so we have expectations and dependencies built on it.