Analysis of information sources in references of the Wikipedia article "佛滅日" in Chinese language version.
There are two main calendars. In North India, the month generally begins with the full moon, in South India with the new moon. Festival days will still fall on the same day, or very closely, but the name of the month may be different. For example, Krishna’s Birthday falls on the eighth day of the dark moon; in the North this is in the month of Bhadra; in the South in Shravana.
在藏傳佛教中,釋迦牟尼佛是藏曆四月十五日降生、成道以及圓寂的日子,而四月十五日是藏傳佛教和南傳佛教共同承認的佛誕日,只有漢傳佛教才把農曆四月初八(藏曆四月初七)當做佛誕日。
黑白月是印度獨特的一個曆法單位,由朔到望,月亮漸圓,稱為白月,月亮由望至朔,月亮漸虧,稱為黑月。根據《大集經》中的朔望月計算方式,是由望至望為一個月。因此才黑月在前,白月在後。由於當時印度並不是統一用這種規則的,北印度行用的是黑前白後,南印度是白前黑後
黑白月是印度獨特的一個曆法單位,由朔到望,月亮漸圓,稱為白月,月亮由望至朔,月亮漸虧,稱為黑月。根據《大集經》中的朔望月計算方式,是由望至望為一個月。因此才黑月在前,白月在後。由於當時印度並不是統一用這種規則的,北印度行用的是黑前白後,南印度是白前黑後
There are two main calendars. In North India, the month generally begins with the full moon, in South India with the new moon. Festival days will still fall on the same day, or very closely, but the name of the month may be different. For example, Krishna’s Birthday falls on the eighth day of the dark moon; in the North this is in the month of Bhadra; in the South in Shravana.
佛誕辰日(藏傳佛教節日,藏曆四月初七)……佛陀成道暨涅槃紀念日(藏曆四月十五)
在藏傳佛教中,釋迦牟尼佛是藏曆四月十五日降生、成道以及圓寂的日子,而四月十五日是藏傳佛教和南傳佛教共同承認的佛誕日,只有漢傳佛教才把農曆四月初八(藏曆四月初七)當做佛誕日。