<font size=2 face="sans-serif">I have been using rrdtool to capture and
consolidate solar radiance, temperature and production from a solar array.
The ability of rrdtool to work with large volumes of information
at different granularity has been very useful. Perhaps even more
important has been gaining an understanding of the issues around data quality
and the details of consolidation.</font>
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<br><font size=2 face="sans-serif">One issue has been the daily consolidation.
I understand the benefits of working in UTC and using midnight UTC
as the daily roll-over time. However, it turns out that in my case
roll-over occurs at 19:00 EST or 20:00 EDT which means early evening data
sometimes gets moved to the next day. </font>
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<br><font size=2 face="sans-serif">I understand the challenges of using
local midnight. I have also reviewed some of the workarounds including
using a local timestamp (this will cause issues if I want to create graphs)
and exporting hourly data into another 'daily' rrd (significantly larger
primary rrd). Would adding an option that allows us to configure
an offset from UTC for the typical 'end of day' be useful and easily implementable?
For my purposes, I can work in EST and ignore Daylight Savings.</font>
<br><font size=2 face="sans-serif"> Thanks,
Norbert</font>