某時

某 = 木 + 甘 : Mnemonic symbol: someone playing "somewhere over the rainbow" on an ukulele.

In the outhouse, the cow has climbed a large Christmas tree and now she's too afraid and panicked to climb down again. Mahatma Gandhi comes to help with his ukulele, playing "somewhere over the rainbow" to calm down the cow.

时 = 寸 + 日 : The sun asks Sherlock Holmes out for a coffee just inside the entrance of the space station. Looking at his pocket watch, Sherlock sees he has time, winks and "thumbs up".

时 = 寸 + 日 : Mnemonic symbol: a giant pocket watch.