refers to a future event that will have been completed before another future event occurs

भविष्यपूर्व

English Usage: By the time you arrive, I will have completed my project in the future anterior tense.

Hindi Usage: जब तुम पहुंचोगे, मैं भविष्यपूर्व काल में अपना प्रोजेक्ट पूरा कर चुका होगा।