Mesoamerican Long Count calendar the use of zero as a place-holder and presents one of the earliest uses of the zero concept in history. On Maya monuments, the Long Count syntax is more complex. The date sequence is given once, at the beginning of the inscription and opens with the so-called ISIG (Introductory Series Initial Glyph) which reads "tzik-a(h) hab’ [patron of Haab' month]" ("revered was the year-count with the patron [of the month]"). Next come the 5 digits of the Long Count, followed by the Calendar Round (tzolk'in and Haab') and supplementary series. The supplementary series is optional and contains lunar data, for
Melanau calendar Melanau calendar The Melanau calendar () is a calendar used by the Melanau people of Borneo. Its year consists of 12 months. The first month, "Pengejin", signifies the celebration of the Kaul festival (a giving of thanks for the preceding year, with prayers for the year ahead). Each month in the Melanau calendar consists of 30 days. It is guided by the constellations, natural phenomena and guardian spirits. Each month is named for occurrences during the month or events which are supposed to have occurred during that particular month, according to legend. The rise and fall of the Sun, the