and rhythm. For the last few decades, the guitar has been celebrated as a versatile music instrument for Tswana music as it offers a variety in string which the Segaba instrument does not have. Other notable modern Tswana music is Tswana Rap known as Motswako. Visual arts Batswana are noted for their skill at crafting baskets from Mokola Palm and local dyes. The baskets are generally woven into three types: large, lidded baskets used for storage, large, open baskets for carrying objects on the head or for winnowing threshed grain, and smaller plates for winnowing pounded grain. Potters made clay pots for storing water, traditional beer and also for cooking and hardly for commercial use. Craft makers made wooden crafts and they made traditional cooking utensils such as leso and lehetlho, traditional wooden chairs and drums among others. Tswana astronomy Astronomy is an old age tradition in Africa. As with all other cultures, various ethnic groups developed their own interpretations of the solar system. Using their natural instrument the eye, Batswana have observed, commented on and named celestial objects of interest to them. There are more telling and specific names that relate to unique stellar patterns and their seasonal appearance e.g. Selemela, Naka, Thutlwa, and Dikolojwane. According to Tswana culture, the stars of Orion's sword were "dintsa le Dikolobe", three dogs chasing three pigs of Orion's belt. The Milky Way was viewed by the Tswana as Molalatladi, the place where lightning rests. It was further believed that this place of rest also kept the sky from collapsing and showed the movement of time. Some even claimed that it turned the sun to the east, in a way to explaining the rising of the sun. It was also believed that it was a supernatural footpath across the sky along which ancestors' spirits walked. The moon (Ngwedi) is said to represent a woman; it brings forth light but not as scorching as the Sun (Letsatsi) and its light is associated with happiness. Venus is called Mphatlalatsana (the brilliant and blinding one) by Batswana & Kopadilalelo (seeker of evening meals). The southern African calendar was made up of 354 days, (12 × 29.5 day lunar month). This was 11 days shorter than the solar year, an issue which could not be ignored. The solution was to add an additional month, when necessary, to "catch up". Some years were 12 months long, others 13.