Good afternoon - Konnichiwa ~ Should be used from 12:00 p.m. to 6:00 p.m
Good evening - Konbawa ~ Should be used from 6:00 p.m to 10:00 p.m
Good night - Oyasumi ~ Should be used from 10:00 p.m to 5:00 a.m or when going to sleep.
Thank you - Arigatou/Gozaimas(u) ~ The term of thanks. "Gozaimasu" should be used when addressing an elder as a sign of respect and honor
You're Welcome - Dou itashimase ~ The term of returning the favor of understanding you've been thanked
Congratulations - Omedeto ~ Should be used to congratulate someone in their success.
What? - Nani? ~ Used when one didn't hear or misunderstood
When? - itsu? ~ Used when asking the time or date
