This Script is a Convenience Script Module for calculations based or started on a fix time / date. (In difference to bar_index-based where the reference point is shifting from bar to bar, thus is dynamic).
Purpose examples: - Comparison by start date - Time driven studies or strategies - Measuring from Date of Interest
The script also contains a date input box with the feature of auto-converting the default time to local user time (a newer feature of Tradingview which too me a lot of research to find; so here integrated). Last not least it the module gives you a ready to go example for multi security comparison on percentage scale with a free selectable start date.
Enjoy Yoxxx
P.S:. For further notes look at the script code. They are concerning usage and how avoiding some strange display issues.