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.
If you file your income tax or fiduciary return on a calendar-year basis, you must make your first estimated tax payment for 2017 by April 18, 2017. You can either pay all your estimated tax with this first payment or pay it in four equal installments due on: 1st payment: April 18, 2017. 2nd payment: June 15, 2017.