Determine if the following sentence is in the simple or the perfect tense: I have celebrated my birthday.
The sentence "I have celebrated my birthday" is in the present perfect tense.
Complete the following task based on the instruction and optional input provided.### Instruction:
Determine if the following sentence is in the simple or the perfect tense: I have celebrated my birthday.

### Output:
The sentence "I have celebrated my birthday" is in the present perfect tense.