The notion of "苦鼠" (bitter rat) refers to the idea that rats born in certain months may face more hardship in life. Here's a breakdown of which months are considered less favorable for those born in the year of the Rat， along with some potentially lucky months:

Less Favorable Months:

January: Individuals born in January may be timid and lack the courage to take risks， which can prevent them from achieving great things.

April: Those born in April may experience a life with a thinner wardrobe and income， and spend their lives working hard with many setbacks. They may not find help from important people， and instead be disrupted by petty people， hindering their opportunities.

May: People born in May may face challenges relying on family and may need to depend on their own intelligence and hard work. They often set high goals for themselves and may have ordinary backgrounds.

More Favorable Months:

January: They can enjoy what comes naturally to them because they have strong family backgrounds that support a life of abundance.

February: People born in February are known to be generous and are often assisted by important people. They tend to be timid， gentle， and refined， and can be successful in literary or administrative roles.

March: Those born in March have common encounters with loss. Although they have food and drink， they feel that everything will end up in vain.

June: People born in June are enthusiastic and outgoing. They should seek sources of water， such as living by rivers or lakes， to help them stand out in life.

July: People born in July are broad-minded and blessed with good fortune. They may not be prominent in their youth， but they have good fortune with helpful people， harmonious families， and many opportunities， giving them the chance to become wealthy.

August: Those born in August are intelligent， excellent communicators， and natural leaders who are admired. They are independent， have their own opinions， and are not easily influenced by others. They tend to have smooth careers and can establish their own successful businesses， enjoying prosperity throughout their lives.

November: People born in the 11th month are conservative and meticulous. They seek a comfortable life， have financial acumen， adapt well to their environment， and live enviable lives.

December: People born in the 12th month always have good food to eat， and live a warm， healthy life.

Additionally， certain times of day are considered auspicious:

丑时 (1:00-3:00 AM): Those born during this time are generally wealthy， with a mild personality and smooth financial prospects. Men born at this time can marry virtuous wives， and women can bring prosperity to their husbands， leading to a free and successful life with a secure family and comfortable living.

卯时 (5:00-7:00 AM): People born during this time may enjoy a life of wealth and honor. They often have a strong family background and receive support from family in their careers， as well as assistance from important people， leading to quick success. They are bold and strategic， potentially becoming generals or wealthy individuals.

申时 (3:00-5:00 PM): Individuals born during this period are of high moral character， talented， and respectful of their parents. They are well-respected and receive support from others， leading to a thriving career with significant achievements. While they may encounter setbacks in life， these do not significantly impact their overall well-being.