occasion - Meaning in Hindi

Meaning of occasion in Hindi

she was presented with a gold watch to mark the occasion ( इस अवसर पर उन्हें सोने की घड़ी भेंट की गई )
it's the first time that I've had occasion to complain ( यह पहली बार है जब मुझे शिकायत करने का अवसर मिला है )
He was excited to see her dressed up for the occasion. ( वह उसे इस अवसर के लिए तैयार देखकर उत्साहित था। )
Moulds have been isolated which occasion the formation of citric acid from glucose. ( मोल्ड को अलग कर दिया गया है जिससे ग्लूकोज से साइट्रिक एसिड बनता है। )

He would often say the exact opposite of what he had said on a previous occasion, yet both would be right.
On one occasion when Colonel Napier was called from home on foreign service, these papers, together with a portrait of John Napier and a Bible with his autograph, were deposited for safety in a room of the house at Milliken, in Renfrewshire.
Mr Stuart did not finish his task on this occasion, on account of indisposition and other causes.
And this is a special occasion.
It was the first occasion the dream took place close to the present time; less than four years ago!
The Whig party on this occasion unanimously followed Burke's lead.
As I live, saith the Lord God, ye shall not have occasion any more to use this proverb in Israel.
This is the kind of place people come for a special occasion.
elections are an occasion for registering protest votes
on one occasion I stayed up until two in the morning