At 09:36 -0500 on 09/06/2011, McKown, John wrote about Re: SMF timestamps:
I should have said that I know how to convert the SMFSTAMP8 to RCF3339 format. The problem is determining the timezone offset for a specific date & time rendered in LOCAL time. Now, for my own shop, there is only one problem: the 1 hour overlap when converting from standard time to daylight saving time. I think I'm "dead in the water" on this point. I simply don't have any way to confirm which offset to use, W.06 or W.05, just based on the individual SMF record. <sigh>
Since each record has a time stamp in its header showing (in local time) when it was written, I would think that if record X+1's time stamp is an hour earlier than record X's time stamp that would be a red flag that the time shift just occurred (so long is the date is the correct day for the switch). All you need to use is a sanity check routine to keep track of if the switch has occurred. Once you get to 3AM on the switch date you are past the ambiguous hour.
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