Today, October 8, is recognized as the day of At Mao in the lunar calendar, which corresponds to the 28th day of the 8th lunar month. This day holds particular significance as it marks the beginning of the Han Luo solar term, which officially ends the autumn equinox. The Han Luo period lasts from October 8 to October 22, indicating a transition to cooler weather as the Northern Hemisphere receives less sunlight.

In addition to its lunar significance, October 8 is also celebrated globally as World Sight Day. This event, observed on the second Thursday of October each year, aims to raise awareness about blindness and visual impairment. According to the World Health Organization (WHO), the aging global population is increasing the prevalence of visual impairments, with approximately 80% of the 45 million blind individuals worldwide being over the age of 50. The majority of these individuals reside in low-income countries, where access to necessary eye care services remains a challenge.

Historically, October 8 also marks the establishment of the Vietnamese pedagogy sector in 1946. This day serves as a reminder of the importance of education and the ongoing efforts to improve teaching and learning in Vietnam.

As we observe this day, it is essential to acknowledge both the cultural significance in the lunar calendar and the global health awareness it promotes. The dual observance of At Mao and World Sight Day highlights the interconnectedness of cultural traditions and contemporary global issues.