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Are the following sentences grammatically correct? Thank you for your help.

"I’m currently assisting the City with our Seven Springs Fine Arts Festival on October 20. We’re looking for artists for our festival.
I am writing to ask if you could forward our information to artists that might be interested.Your help is greatly appreciated and I look forward to hearing from you.

A copy of our poster is attached."
Comments  
"I’m currently assisting the City with our Seven Springs Fine Arts Festival on October 20. We’re looking for artists for our festival. I am writing to ask if you could forward our information invitation to artists that might who may be interested.Your help is greatly appreciated and I look forward to hearing from you.

A copy of our poster is attached."
26TMNTJG2PGon October 20
What does this date mean in the sentence? The date the poster will be assisting the event or the date of the event? If the latter, is 'on' correctly used?
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October 20 is the date that the even happens.
New2grammar
26TMNTJG2PGon October 20
What does this date mean in the sentence? The date the poster will be assisting the event or the date of the event? If the latter, is 'on' correctly used?

If you single out that sentence alone, you may argue that there is an ambiguity which, in fact, has already been dispelled by "currently" and later by the text of the message.