Inconsistent Timeframe Representation in Different Chart Intervals

[NijanJ]

I have encountered an issue with the representation of timeframes in different chart intervals in my trading application. The problem arises when switching between a 1-minute timeframe and a 15-minute timeframe.

Expected Behavior:
In the Indian market, the trading day starts at 9:30 AM and ends at 15:30 PM. When using a 1-minute timeframe, the timestamps are correctly aligned with the trading hours.

Observed Behavior:
However, when I switch to a 15-minute timeframe, each trading day starts at 15:00 PM and ends at 21:00 PM. This inconsistency in the representation of timeframes is causing confusion and affecting the accuracy of my analysis.

[highfestiva]

This I would guess has to do with your input data. If you print the DataFrame you're plotting, you'll see that the time differs. Also, the display time of finplot defaults to UTC. See here for more info.

[NijanJ]

Thank you for your prompt response and assistance with my question. Your help is greatly appreciated! I will follow your suggestion and implement the changes accordingly. If I have any further questions, I'll reach out to you. Thanks again!