- A solar calendar is based on the orbit of the earth around the sun.
Typically, it takes 365.2422 solar days to complete the orbit.
- A leap year attempts to adjust the calendar by adding an extra day every four years.
- A lunar calendar is based on the orbit of the moon around the earth.
Typically, it takes 29.6 days to complete a cycle.
- A luni-solar calendar is a “hybrid” calendar that uses “lunar” month and “solar” year.
- The Burmese use a Luni-Solar-Socio-Religious Calendar.
It is used for social and religious events.
- There are 12 lunar months with a total of 355 days in a Common Burmese Year.
- There is a difference of 10 days with a Common Year in the Gregorian Calendar.
- An inter-calary month named “Second Waso” is usually added every three years to sync again with the Solar Calendar.
It is known as “Wah Htutt”.
If needed, an additional day is added in “Wah Gyi Htutt”.
- Some other Luni-Solar Calendars (e.g. used by the Chinese) also have 12 months in a year and an extra month in the year in which the Lunar and Solar Calendars are synchronized.
- The “Chinese” New Year may therefore occur in late January or early February.
October and Thadinkyut
- “Oct” stands for Eight.
October was the eighth month in the old Roman Calendar.
- In the Gregorian Calendar, October is the tenth month.
In the old Roman Calendar, September, October, November and December were the 7th, 8th, 9th and 10th months (as indicated by the prefixes). In the Gregorian Calendar, they are 9th, 10th, 11th and 12th months of the year.
- The Thadinkyut Festival often falls in October.
- The Phaungdaw-u festival in Inlay Lake is held around the Full Moon of Thadinkyut. I wrote a poem “Phaungdaw-u Festival” for the Thadinkyut Supplement.
- Four events related to Thadinkyut :
Thadinkyut Lightning Festival
Pa Wa Ya Na (Monks ask for forgiveness of unintentional wrong doing)
Soon San Sein Laung Pway (Mass offering of requisites to the monks)