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2018 Calendar of Uposatha Days
2561-2562 BE
compiled by
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Shared by: Wat Metta (Californien, US.) and Ven. Hassapanno.
Edited by Samana Johann
Alternative format: [PDF icon]

Here are this year's dates of Uposatha days as observed in Thai Buddhism (Dhammayutika-Nikāya und Mahā-Nikāya). This calendar follows the Dhammayut calculation—which, for the days marked with an asterisk*, is one day later than the Mahānikai. [1]

Astronomical calculation: According Vinaya the day starts with sunrise and not like in "modern calculation of time" at 00:00 o'clock. This starting point of a new day is in regard to the place and its elevation different. As full-moon start at the same time everywhere on earth, it is possible that the day of full-moon accrues, in accordance with the calculation of moon-phases, differently. For comparison the data of Mondphasen - Table 2018, CET (wikipedia), as the sun rise calculations of www.gaisma.com can be used. If the "day of full-moon, according to Vinaya, is meant as the day when a full-moon accrues, or a day that follows the occasion of a full-moon, could not be investigated. See also Discussions about request of Uposatha-days and Table 2016.



  Full moon

Full moon

Last quarter moon

Last quarter moon

New moon

New moon

First quarter moon

First quarter moon

Full moon

Full moon

Last quarter moon

Last quarter moon

January 1 9 16 24 31
Māgha Pūjā (km,lk)
-
February - 8 15* 23* - -
March 1
Māgha Pūjā (th)
9 16 24 31 -
April - 8 15* 23* 30*
Visākha Pūjā
-
May - 8* 14 22 29 -
June - 6 13* 21* 28* -
July - 6* 12 20 27
Āsaḷha Pūjā
August - 4 11 19 26 -
September - 3 9 17 24 -
October - 2 9 17 24
Pavāraṇā Day
-
November - 1 8* 16* 22
Ānāpānasati Day
30
December - - 7 15 22 30

Notes

1.
Dates provided by Metta Forest Monastery for Dhammayut and by the Int. Forest-Sangha for Mahanikaya. The last dates are equal to the traditional calendar of the Mahanikaya of Cambodia.

For an astronomical calendar of lunar phases, see Calendar-365.com.