If I say:
16日[以降]{いこう}参加できません。
It means I cannot participate after the 16th.
However, what about on the 16th? Is it also implied that I cannot participate on the 16th either? Or, that I can participate on the 16th, but not after?
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Sign up to join this communityIf I say:
16日[以降]{いこう}参加できません。
It means I cannot participate after the 16th.
However, what about on the 16th? Is it also implied that I cannot participate on the 16th either? Or, that I can participate on the 16th, but not after?
Yes, it is inclusive. All the similar phrases that use 以 are inclusive: 以内、以前、以上、以下、以来. However, unfortunately a lot of people do not know this and use them carelessly without thinking.
If you wanted to express "After the 16th but not including it", you could say:
16日の翌日から参加できません。
However, I would be more inclined to say:
17日以降参加できません。