昨 is a Japanese kanji written with 9 strokes, listed here under the keyword “yesterday”. It is built from 乍 (saw) and 日 (day). In Remembering the Kanji by James W. Heisig it is frame 1222.
On KumiJi Glyph Explorer, open the parts search and type “saw” + “day”. 昨 is among the results, together with every other character containing the same shapes.
Open 昨 in the interactive kanji search
to expand every part down to its smallest pieces, add your own names and mnemonic stories,
or search for other characters by their parts.