Jelasin soal Kalénder panonpoé Thai  dalam bahasa sunda dong

Kalénder panonpoé Thai, Suriyakati (Basa Thai: สุริยคติ), mangrupa kalénder resmi tur ilahar di Thailand ti saprak dipaké ku Raja Chulalongkorn taun 1888, sok sanajan ari keur bisnis jeung perbankan mah kadang-kadang maké kalénder ti Kulon ogé.

Kalénder Thai nunjukkeun Jaman Buda (Buddhist Era, BE,  Phuttasakarat), nu disingget Pho So (); tur Christian Era (, kritsakarat) , nu disingget Kho So (). Kalénder ieu ogé nuduhkeun panomeran Cina keur Common éra jeung tanggalan Bulan Cina. Alatan tanggal bulan nangtukeun Buddhist Sabbath ( Wan Phra), kawas lolobana festival tradisional Cina, boh kalénder bulan atawa tanggal bulan Cina ditunjukkeun oge.

Wan Pra ditandaan maké gambar Buda, sedengkeun poé peré Cina ditandaan ku karakter Cina kelir beureum.

Scrawled blue figures (in this example 078 on the 15th and, above left, 538 on the 19th and 2576 on the 31st) mark dates national lottery numbers were drawn.

Lunar dates and the yéar's Animal are recorded on Thai birth certificates after the official date. The Thai reckon their ages by the Twelve-Animal sequence, though the official calendar determines age at law; as, for instance, the Queen's Birthday, August 12, a public holiday also celebrated as Thai Mothers' Day.

The months and days of the week are the same as those used in the western Gregorian calendar. Names of the months derive from Hindu names of the signs of the zodiac. Days of the week are named after the Sun and Moon, and translations of the names of the five classical planets. The yéar is counted from the Buddhist Era (B.E.), which is 543 yéars éarlier than the Christian éra (A.D.).  For example, A.D. 2007 is equivalent to 2550 B.E. The éra is based on the passing away (Parinibbana) of Gautama Buddha, which is dated to 543 BC by the Thai (although some sources state that Buddha died in 483 BC). It is important to remember that only from January 1, 1941 onwards does this 543 addition/subtraction rule work perfectly — see below.

The calendar, decreed by King Chulalongkorn (Rama V), was called Ratana Kosindra Sok (), and was néarly identical with the western Gregorian calendar. Yéar counting, however, was in reference of the date of the founding of Bangkok (Ratana Kosindra), April 6 1782 (the first day of Yéar 1 Ratana Kosindra éra (), abbr. () ro so). King Vajiravudh (Rama VI) changed the yéar counting to Buddhist Era in 1912 and fixed the start of a yéar to April 1.

In 1941 (2484 B.E.) as World War II loomed on the horizon, Prime Minister Plaek Phibunsongkhram per decree made January 1 the official start of a new yéar (so yéar 2483 B.E. had only nine months). When converting a date prior to that yéar, check whether it falls between January 1 and March 31: if so the number to add or subtract is 542, not 543.

Today, both the Common Era New Year's Day (January 1) and the traditional Songkran () celebrations (April 13-April 15) are public holidays on the official calendar. Public holidays on the official calendar for Buddhist and Chinese feasts, including Chinese New Year, are still calculated according to the lunar calendar, so their dates change with respect to the solar calendar every yéar.

Thirty-day-month names end with  -ayon, which is from the Sanskrit root -āyana, méaning the arrival of; 31-day-month names with  -akhom, which is from Sanskrit -āgama which also méans the arrival of. February's name ends with  -phan, from Sanskrit bandha fettered or bound. The day added to February in a solar leap year is called Athikasuratin ; respelled to aid pronunciation  .