In simple words
A transit is where a planet is in the sky now, compared with your birth chart. Here, today's Mercury makes a opposition (180°) to the spot where your rising sign was when you were born.
It is a time of pressure that pushes you to grow, and it lasts a day or two (longer when it is retrograde). Your Today page tells you when it is happening for you.
Love
Talk openly with a partner about plans.
A friend's advice is worth hearing.
Clarify expectations together.
Work
Contracts and one-to-one meetings need attention.
Others bring useful ideas. Stay open.
Negotiate calmly.
Mood
Engaged with others, maybe tired by evening.
Balance talk with quiet.
Reflect on what you heard today.
About the opposition
An opposition places two planets across the sky from each other. Each one pulls toward its own side of life. Oppositions are often felt through relationships, as if another person plays one side. The work is balance: holding both needs instead of swinging between them.