Adelantar y retrasar

[ROBINDESBOIS]

adelantar una cita médica
retrasar una cita médica
English?

[wrholt]

adelantar una cita médica
retrasar una cita médica
English?

Reschedule (not specific about earlier or later)
Push up/Move up (in reference to time = reschedule to an earlier time)
Push back/Move back (in reference to time = reschedule to a later time)

[ROBINDESBOIS]

Thanks

[ROBINDESBOIS]

How about moving ahead and postponing?

[Perikles]

How about moving ahead and postponing?I think what @wrholt said was more AmE. In BrE you would say the appointment has been postponed, or the appointment has been brought forward to...