How can i set a "starting hour " (and not just de "stárting day")?

[Jérémy Koch]

It is possible to set a "deadline day", a "deadline hour" and a "starting day"... Could someone explain me how I can set de "starting hour".

Thanks in advance

[Violetta]

Hi @Jérémy Koch 

I'm Violetta from the Planyway team:)

Trello doesn't have the starting hour field by default but you can get it with the Planyway power-up. Once you have it set up, this field shows inside a Trello card, plus you may view your Trello cards on the Planyway calendar/timeline. 

Let me know if you have questions:)

[Summer Hogan]

Hi @Jérémy Koch - welcome to the community! 
It does not look like there is a feature that will let you set a "starting hour" on a Trello card, but there is a proposed solution in this previous community question that might work for you. It's the only solution I could find for you so hopefully it works: 
https://community.atlassian.com/t5/Trello-questions/How-can-I-change-the-default-time-that-Trello-sets-the-on-the/qaq-p/1788277