Title: 1968 Burma cyclone
Content:  The 1968 Burma cyclone was regarded as the worst to strike the country during the 20th century before it was surpassed by another unnamed cyclone in 2004 and further, Cyclone Nargis in 2008, respectively. The first tropical cyclone of the 1968 North Indian Ocean cyclone season, it started as a depression on May 7 on the northern Andaman Sea. With low wind shear and warm sea surface temperatures, the storm intensified in the waters near Burma before heading northwestwards. It then started to rapidly intensify, with an eye becoming apparent on satellite imagery on May 9. Also that day, it reached its peak 
Title: 1968 Burma cyclone
Content:  with 3-minute maximum sustained winds of 220 km/h (140 mph) by the Indian Meteorological Department, which is equivalent to a super cyclonic storm; however, the agency treated the system as a severe cyclonic storm. Little to no changes happened on the cyclone as it turned northeastwards, making landfall near Akyab (now Sittwe) between 18:00 and 21:00 UTC on that day. Land interaction rapidly weakened the storm, dissipating on May 10 as an area of low-pressure in south Chin State. The predecessor to the cyclone caused light to moderate downpour to the Andaman Islands; however, no deaths were reported. Winds reported from the 
Title: 2004 Myanmar cyclone
Content:  The 2004 Myanmar cyclone was considered the worst to strike the country since 1968. The second tropical cyclone of the 2004 North Indian Ocean cyclone season, it formed as a depression on May 16 in the central Bay of Bengal. With low wind shear and a surge in the monsoon trough, the storm intensified while meandering over open waters. The storm eventually began a steady northeastward motion due to a ridge to the north over India. While approaching land, an eye developed in the center of the storm, indicative of a strong cyclone. On May 19, the cyclone made landfall along northwestern Myanmar near Sittwe, with maximum sustained winds estimated at 165 km/h by the India Meteorological Department. The storm rapidly weakened over land, although its remnants spread rainfall into northern Thailand and Yunnan province in China. 
Title: 1968 Burma cyclone
Content:  is possibly due to the little information of the people inland from the cyclone. Despite this, over 12,409 people were evacuated to twelve camps that were donated by the United States of America after a cyclone that also devastated the area, nearly a year later. Some newspapers described the wide swath of the cyclone as the worst to affect Burma until it was surpassed by another unnamed cyclone in 2004 and further, Cyclone Nargis in 2008. Damages totaled K15 million kyat ($3.169 million USD). The official death tally from the storm was at 1,037 with an estimated 2,000 more missing. The majority of fatalities were from Pauktaw and Myebon Townships with 553 and 415 deaths, respectively.
Title: 1968 Burma cyclone
Content:  On May 5, a weak cyclonic circulation, which likely emerged from the Andaman Sea started to move westwards across the southern portion of Burma. The convection of thunderstorms started to consolidate at that time, as pressure countings along the southern coasts of Arakan and Tenasserim regions started to fall, all in the country. In addition, on that day, a trough of low pressure formed along the circulation in the northern Andaman Sea, which would later spawn a well-marked disturbance, early the next day. At 18:00 UTC that day, the disturbance intensified to a depression and further to a deep depression on the next day as it located in a favorable environment for intensification, as evidenced by the rapid strengthening state of the system. 
Title: 2002 North Indian Ocean cyclone season
Content:  01B unexpectedly accelerated to the north-northeast while crossing the northern Andaman Sea. At 2300 UTC on May 11, the cyclone made landfall just east of Yangon, Burma. By early on the following day, it weakened to a depression. The final warning on Cyclone 01B was issued at 0600 UTC on May 12 and indicated that the storm dissipated about 175 km (110 mi). The city of Yangon experienced wind gusts of about 47 km/h (29 mph), according to the JTWC. Cyclone 01B co-existed in a pair, with the southern counterpart being Tropical Cyclone Errol, which was in the South Indian Ocean within Australian Bureau of Meteorology's responsibility.
Title: 2004 Myanmar cyclone
Content:  buoy near the storm's center recorded a pressure of 994 mbar on May 18, the lowest recorded pressure in association with the storm. Convection increased around the center and organized into a distinct eye. The JTWC upgraded the cyclone to the equivalent of a minimal hurricane at 00:00 UTC on May 19, estimating peak 1 minute sustained winds of 120 km/h. The IMD assessed a much higher intensity, estimating peak 3 minute winds of 165 km/h at 03:00 UTC that day. About an hour later, the cyclone made landfall at peak intensity with an estimated pressure of 952 mbar in northwestern Myanmar near Sittwe, near the country's border with Bangladesh. It weakened gradually over land, dissipating over Myanmar late on May 19.
Title: 1968 Burma cyclone
Content:  The damage from the cyclone was heaviest in Burma, where the storm caused winds over 100–150 mph in Akyab. Though no rain accumulation reports were received from the country, massive storm surges buffeted houses and ships near the coast and on the path of the cyclone, submerging them. Nine townships in the country reported significant damages while the death toll from the cyclone mainly came from Akyab and Kyaukphyu because of the proximity to the cyclone's track. The former was 90% damaged due to the storm, with an estimated 50,000 individuals being rendered homeless out of the population of over 75,000. The storm destroyed over 57,660 houses in the country alone, rendering 297,768 individuals homeless. Government buildings 
Title: History of Myanmar
Content:  On 3 May 2008, Cyclone Nargis devastated the country when winds of up to 215 km/h (135 mph) touched land in the densely populated, rice-farming delta of the Irrawaddy Division. It is estimated that more than 130,000 people died or went missing and damage totalled 10 billion US dollars; it was the worst natural disaster in Burmese history. The World Food Programme reported that, "Some villages have been almost totally eradicated and vast rice-growing areas are wiped out." The United Nations estimated that as many as 1 million were left homeless and the World Health Organization "received reports of malaria outbreaks in the worst-affected area." Yet in the critical days following this disaster, Burma's isolationist regime complicated recovery efforts by delaying the entry of United Nations planes delivering medicine, food, and other supplies. The government's failure to permit entry for large-scale international relief efforts was described by the United Nations as "unprecedented."
Title: 2004 Myanmar cyclone
Content:  from the cyclone reached 157 km/h (98 mph) in Myanmar, occurring in conjunction with heavy rainfall and a high storm surge. Despite the storm's ferocity, the government did not report about the cyclone for ten days, as they usually under-report on landfalling storms. The cyclone caused heavy damage throughout Rakhine State, destroying or heavily damaging 4,035 homes and leaving 25,000 people homeless. There was widespread crop damage, resulting in food shortages, and damaged roads disrupted subsequent relief efforts. Damage in Myanmar totaled over K621 million kyat ($99.2 million USD), making it the worst storm in the country since 1968, and there were 236 deaths, with an unofficial death toll as high as 1,000. Although damage was heaviest in Myanmar, the cyclone's effects also spread into neighboring Bangladesh, where strong winds knocked over trees and capsized two ships.

Question: when did the burma cyclone happen?
Answer: 1999 Odisha cyclone.