“One must perform sacrifices as prescribed in the śāstras, and they must give in charity their hard-earned money for Kṛṣṇa’s cause. That is called dāna. Yajña, dāna and tapasya. Tapasya. Just like tomorrow is Śrī Rāma-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)

“Lord Caitanya’s Birthdate is on the Phalguna Purnima between 15 of Feb. and 15th of March. The full moon day is Lord Caitanya’s Birthday. I think you can send for Rayarama’s calendar which he has published. The exact day is 14th March, Thursday, 1968. The procedure is that you should fast from morning to evening (about 7:00) after that there should be offering to Lord Caitanya and prasadam should be accepted just like on Ekadasi day, and next day, Friday, full love feasting may be provided to as many devotees as you can.”
(Letter to: Janardana — Los Angeles, 21 January, 1968)

“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)

“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.”
(Letter to: Mahapurusa — San Francisco, 28 March, 1968)

“Tamāla Kṛṣṇa: So there will be an initiation on Rāma-navamī.

Prabhupāda: Rāma-navamī is upavāsa up till the… Go to observe fasting up to the evening.

Tamāla Kṛṣṇa: So moon.

Prabhupāda: Sunset.”
(Room Conversation, March 26, 1977, Bombay)