German phrase
Wann passt es Ihnen am besten?
Meaning
What time suits you best?
When to use it
Asks for the best time. Use it politely when arranging a meeting or appointment.
Example dialogue
Wann passt es Ihnen am besten?
What time suits you best?
Donnerstag um 15 Uhr passt mir gut.
Thursday at 3 p.m. works well for me.