We gather as a group once or twice a year, for old times' sake, and get loaded.

为了过去的时光我们每年都会聚一两次，并喝得大醉。

《柯林斯英汉双解大词典》

For old times' sake, I agreed to go with him.

看在旧日的情分上，我同意和他一起去。

youdao

I've only got the afternoon, but I had to see you for old times' sake.

我只有这一个下午，但为了老交情，我还是看你来了。

youdao

The BBC's Mark Gregory said the deal was not just for old times' sake, and that Heinz now does much of its business in fast growing, developing economies.

BBC: Heinz ketchup bottles

Now, when I run across it on TV, I savor its silliness and, more often than not, take time out to watch a few scenes for old times' sake.

WSJ: 'Olympus': Upping The Idiocy in D.C. | 'Olympus Has Fallen' | 'The Sapphires' | 'Starbuck' | 'From Up on Poppy Hill' | 'Admission' | 'Training Day' | 'Spirited Away' | 'Clueless' | By Joe Morgenstern