Pisces
Because by the time you move into February each year you will already be 10 days into the month long wind down of your old solar year, with the Sun in a nostalgic and reflective part of your chart before returning to Pisces on 19th February to begin your birthday month and new solar year, this is a month when the lines between the past, present and future are often blurred. Partly because, as is often the case and is this year, Mercury and Venus will make that shift ahead of the Sun, but mainly because there has been near continuous planetary activity in Pisces since 2010 and with Pluto in a nostalgic and reflective part of your chart from 2024 to 2044, with continuous planetary activity there as well.
However, it is the faster planets that are making this more pronounced this month. By the time Mercury returns to Pisces on 7th February to get your head in the game, ideas on the table and the communication lines open, your old solar year still has 12 days to run, while until returning to Pisces on 10th February, Venus is taking your heart on a nostalgic trip down memory lane. Meanwhile, while Venus and Mercury are just returning to Pisces and the Sun will return on 19th February to begin your birthday month and new solar year, the planets that have been here for years now are leaving.
It was at the end of last month that here since 2012 Neptune, the planet of hopes and dreams and your ruling planet left, not to return again in our lifetime. Saturn, the hard taskmaster of the cosmos and the planet that can give you the resolve to do whatever it takes for as long as it takes and the power to move mountains if you have to, will leave on 14th February, bringing the foundation years of a new three decade long Saturn cycle to a close. At the same time, Neptune and Saturn's return to your income sector is opening the doors to a whole new era that will span the next 13 years.