If you're married or in a committed relationship, it's possible that after the August 12 you and your partner will feel as if communication is not what it typically is. There might be extra misunderstandings, or you might have a rough time making any vital decisions together. Hold off until after September 5 if possible.
Financially, the two of you might also be in for a bit of trouble. Your partner might be tempted to make a reckless move near August 23 -- do your best to prevent it.
If you're newly dating someone, take care not to rush into bed with each other too quickly. Unless, of course, you're up for a one night stand.