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Since your PI Data Archive is running on a server with a clock configured for the eastern time zone, and there has been some changes to the DST rules for this time zone in the past, I would recommend downloading the localhost.tz file from the Tech Support website: https://techsupport.osisoft.com/Downloads/File/c056db9e-5d15-4052-af69-15f7e578231c
Once copied to the dat folder, you will need to restart your PI Data Archive for the changes to take effect.
Thank you for the update. I had raised a case #878651 for this issue.
When we performed the above steps of copying the correct timezone file and restarting the PI data archive, the newly created totalizer was working fine. However for the existing totalizers to work as expected, we had to edit the totalizer tags for the configuration changes to be updated in the pilasttot_t.dat (piserver\dat).
I have tried changing the offset for the totalizers and reverted the changes to get them edited, and it started working thereafter.