Well, I am just end user and I couldn't understand everything of your problem but if you are trying to overcome problem with UTC time, then you could use plugin called Tiddlytime.
http://tiddlytime.tiddlyspot.com/ If you are in UTC+01:00 zone, then use this macro: <<dt "YYYY0MM0DD0hh0mm0ss" "-60">> If you are in UTC-01:00 zone, then use this macro: <<dt "YYYY0MM0DD0hh0mm0ss" "60">> to generate time in UTC -- You received this message because you are subscribed to the Google Groups "TiddlyWiki" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/tiddlywiki. To view this discussion on the web visit https://groups.google.com/d/msgid/tiddlywiki/3216f7f3-02a3-4d48-b9a9-4698e8cdb7de%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.

