How long is a travel signature typically valid for?
Travel signatures are typically valid for one year or until the program end date on your I-20 form, whichever comes first.
Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
How long is a travel signature typically valid for?

### Input: Not applicable

### Response:
Travel signatures are typically valid for one year or until the program end date on your I-20 form, whichever comes first.<|im_end|>