Month of Aquarius/Magha (Mid-Feb to Mid-March)
Sun’s annual transit in the sign of Aquarius (kumbha) is called the month of Aquarius (Magha month). Sun’s direct aspect falls over Leo and the full moon of the month will be in magha nakshatra. In Tamil, its called Maasi month, Maasi also means Magha.
The theme of this month is "achievements". Because Magha represents the height of achievements, the throne of the ancestors. In other words, if you spent your last month on constructing a building then you'll spend this month on inaugurating the same. That means either naturally or artificially you'll get opportunities to fulfill your goals (long-term or short-term). It also has the theme of "strong foundation", because Sun transits over Saturn ruled zodiac so it has the tendency to start something for a long-term progress.
Aquarius starts with dhanishta (lioness) nakshatra and ends with purva bhadrapada (lion) nakshatra, while the opposite sign Leo itself is a lion, so this month could bring a long lasting success in your endeavours especially if your Sun and Leo are strong.
Remedial Measures
The deity of Aquarius is Lord Shiva, hence its a perfect month to perform remedies for Lord Shiva. Aquarius is directly opposite to Leo, hence its a good time to perform remedies for Leo natives. Also its a good time to perform remedies for childbirth, ancestral curse, learning disorder.
The tithis Trayodashi and Chaturdashi are the best. Because Trayodashi is dedicated to Lord Nandi and Chaturdashi is dedicated to Lord Shiva himself.
Maha Shivaratri
Maha Shivaratri = The Great Night of Shiva
Maha Shivaratri is an annual religious festival dedicated to Lord Shiva during the month of Aquarius. It is celebrated by the Shiva worshippers (aka Shaivites) on Krishna Paksha (waning fortnight) Chaturdashi tithi of this month. The devotees stay awake the entire night of Shivratri to chant mantras such as "Om Namah Shivaya", "Maha Mrityunjaya Mantram" and perform pujas to Lord Shiva to gain spiritual powers and wisdom. One may also pour milk (abhishekam) on Shivlingam while chanting.
Auspicious days, Nakshatras and Tithis for worship
Days such as Mondays and Saturdays. Nakshatra such as Krittika, Ardra, magha, purva & uttara phalguni, dhanishta, satabhisha and purva bhadrapada. Tithis such as trayodashi, chaturdashi, chaturthi and sashti tithis are auspicious for rituals, pujas, homa, meditation, chanting mantras.
Read about the remedies for childbirth and ancestral curse