Display date for connections to clarify which day they occur on

[maninthemiddle01]

Currently, the connection results don't display the date of each connection. This becomes problematic for infrequent services:

• When there's only 1 connection per day (or less frequent), it's unclear which day the connection actually departs on
• Users cannot easily distinguish whether a result is for today, tomorrow, or a later date

This might be related to #964

Expected behavior:
Each connection result should clearly show the departure date (e.g., "Mon, Feb 24" or "2024-02-24"), especially when results span multiple days.

Suggested improvement:

• Always show the date alongside the departure time, or
• At minimum, show the date when connections span across different days