What is the start and end time of a daily chart

[tavacska]

Lately, I tried to import historical data for daily chart and 1-min chart. But I noticed different provider has different daily chart actually. In US, the daily chart start from 5pm EST and ends at 4:59pm EST.
Sometimes, the daily chart relies on the bars shape, such as engulfing bars. So I just want to make sure, when daily chart should start and end.

Thanks.