This is the 28th most frequent Malay word.
ketika
"When" or "at the time."
Here, 'ketika' functions as a conjunction to indicate a point in time when something occurred.
Saya sedang membaca ketika dia tiba.
I was reading when he arrived.
In this sentence, 'ketika' introduces a condition or event leading to an action.
Ketika hujan turun, kami berlari ke tempat teduh.
When it rained, we ran to a sheltered place.
'Ketika' is used here to signify circumstance or occasion requiring preparedness.