From 今日は, “as for today”; the rest of an older greeting was dropped. The final は is the topic particle and is pronounced wa.
From 今日は, “as for today”; the rest of an older greeting was dropped. The final は is the topic particle and is pronounced wa.
When do you say こんにちは?
From late morning through the afternoon when meeting someone.
How is こんにちは written?
It ends in は, even though that syllable is pronounced wa.
Can you say it at night?
こんばんは is the usual evening greeting.
Can you say it to a stranger?
Yes, it is suitable for someone you have not met before.
Is こんにちわ the standard spelling?
No, the standard spelling is こんにちは.