These unfortunate occasions do arise, but I've found that time does much to improve them.

This is a most unfortunate occasion!

It was where they worked, lived, loved, and, on those unfortunate occasions, it was where they died.

Mr. Neville, on that unfortunate occasion, commits himself under provocation.

"We also have facilities where we lease long-distance capacity to companies like Verizon and we're not using this unfortunate occasion to pressure these firms."

He had big role in the unfortunate occasions of Vojvodina massacres.

On one unfortunate occasion, when the ever-more-forgetful old woman loses her money and keys, the neighbors are thrown together with hilarious results.

"We have lost face, you and I. Conclude this unfortunate occasion and do it now."

There was the unfortunate occasion when we accidentally (albeit repeatedly) linked the word "Netscape" to a site for devil worshipers.

Indeed, on one of these unfortunate occasions the effects were so patently unconvincing that self-willed credulousness could be the only explanation.