Definition of opponent for English Language Learners. : a person, group, etc., that is against something (such as an action, law, or system) : someone or something that does not want something to exist, be done, etc.
Generally, your first mortgage payment is due on the 1st day of the 2nd month following your closing date. For example, if you close in February, your first mortgage payment will be due on Aproil 1st. Generally speaking of course.
Typically if you close within the first 10 days of the month, you have the option of your 1st mortgage payment being due the 1st of the immediate month or skipping that month and it be the following month (i.e. closing on Feb. 7th you could choose your 1st payment to be due March 1st or April 1st).