Grammar · Useful patterns
Time expressions and particles
[Specific time] に / [Relative time] no particle
Clock times, dates and days of the week take に. Words that are relative to now do not take anything.
The mistake to avoid
If you can put a number on it, it probably takes に. きょう, あした, いま, まいにち never do.
Examples
月曜日に行きます。
げつようびに いきます。
I'll go on Monday.
明日行きます。
あした いきます。
I'll go tomorrow.