“One must perform sacrifices as prescribed in the shastras, and they must give in charity their hard-earned money for Krsna's cause. That is called dana. Yajna, dana, and tapasya. Tapasya. Just like tomorrow is Sri Rama-navami. The tapasya will be that all the devotees will observe fasting from morning till evening. This is called tapasya”.
Pandal Lecture, Bombay, April 7, 1971
Our next ceremony is Lord Ramacandra's Birthday, on the 7th of April. It should be observed in the same way as Lord Caitanya's Appearance Day, namely, fasting up to evening and then accept Prasadam, and all our ceremonies should be performed with continuous Kirtana, of Hare Krishna, Hare Rama. That will make all our functions successful.
Letter to Mukunda, San Francisco, 26 March, 1968
Today is Rama-navami, the appearance day of Lord Ramacandra, and everyone fasted until 4:00 p.m. Prabhupada walked through a nearby forest for his daily exercise. We drove out along Chattikara road a couple of miles and when he saw the wooded area he decided to get out.
A Transcendental Diary Vol 1 - Hari Sauri dasa (New-2003)
Chapter Eleven, Sri Vrndavana Dhama
Tamala Krsna: So there will be an initiation on Rama-navami.
Prabhupada: Rama-navami is upavasa up till the... Go to observe fasting up to the evening.
Tamala Krsna: So moon.
Prabhupada: Sunset.
Tamala Krsna: Sunset, moonrise.
Prabhupada: Authorized.
Tamala Krsna: Caitanya Mahaprabhu, Lord Ramacandra, and Nrsimhadeva also?
Those three.
Bhakti-caru: Srila Prabhupada, can I prepare this one? (indistinct) No.
Tamala Krsna: Sudama Maharaja's troupe will be performing Ramayana. They are
starting to perform tonight the Ramayana. Tonight and continuing or through, as far as I know, till Rama-navami.
Prabhupada: I have taken six capatis.
Tamala Krsna: Six capatis!
Room Conversation, March 26, 1977, Bombay
So far the Advent Day of Lord Rama Candra, it should be celebrated as Lord Caitanya's Birthday was done. Fasting up to evening, and then take prasadam, and chant Hare Krishna whole day, and be engaged in reading and chanting off and on, chant for some time, then read for some time, then again have Kirtana and so on, throughout the day. If you have not got a Ramayana, then you can read Bhagavad-gita or Srimad-Bhagavatam, that is all right.
68-03-28.Letter: Mahapurusa
This is an apparent paradox in the BTG international calendar. Notice the time up to which fasting must be observed, and also notice the year.
This is not a typo error, as after 1996 mostly BTG has shown fasting till noon.