Devotee wrote:Kirtu, I did research, found the FPMT website. It says 100 million times, for New and Full Moons...
Why is there a difference between traditions?
I'm not sure there is as the traditions are practically the same with respect to sutra and much of tantra. Apparently the merit multiplying days come from sutra and perhaps different sutras say different things about the multiplication.
There is no reference to merit multiplication in the Pal Sakya calendar booklet for the coming year although all the days are listed. Jeff Watt's Sakya Resource Guide calendar page
lists the new moon and full moon (the 15th and 30th day in the lunar calendar) as 100-fold merit multiplying days and references the Kshitigarbha Sutra (all the merit multiplication listed there refrences the Kshitigarbha Sutra - however I can't find the reference in the sutra so I will ask my lama although I have read other references to merit multiplying days in other sutras).
In posting online I have almost always listed special days and merit multiplication from Buz Overbeck's excellent Tibetan eCalendar application
which lists all the major special days and inauspicious flag raising days, etc. However he does not list the 14th, 23rd or the 29th day of the lunar calendar as special (the Sakya sources do).
Also... If reciting certain mantras or sutras can bring infinitely massive amount of merits, how come there are days not suitable for prayer flags, and other religious activities?
I don't know. I have been told that prayer flag hanging is from Bon so perhaps the unfavorable days comes from that (however I'll bet that we can find a sutric reference to prayer flags or perhaps we can find it from India after 600 AD).
This is all very interesting and fascinating to me. I'm familiar with the Chinese calendar, but not the Tibetan one...
Both the Chinese and Tibetan calendar are lunar-solar calendars and are mostly the same. However I don't know if there are astrological differences between the two calendars.
BTW there are at least two Tibetan calendars (there might be three).