Happening from time to time

कभी-कभी होने वाला

English Usage: We go on occasional trips to the mountains.

Hindi Usage: हम कभी-कभी पहाड़ों की यात्रा करते हैं।

A rare event or happening

एक दुर्लभ घटना

English Usage: His success was an occasional in his otherwise undistinguished career.

Hindi Usage: उसकी सफलता उसकी अन्यथा असाधारण करियर में एक दुर्लभ घटना थी।