What to recite and when.

Nityanusandanam are to be recited on Ashvini, Bharani, Pusam, Ayilyam, Purattasi and  Utirattati. 
Amalanatipiran is to be recited on rohini nakshatra days.
Ramanuja Nurrathati to be recited on Mrugasiram, tiruvatarai, Hastam, Anusam, Puratam, Utiratam.
Perumal Tirumoli is to be recited on Punarvasu star day.
Nanmukam Thiruvantati to be recited on Makam nakshatra days.
Nacchiyar Thirumoli on the puram days.
Ciriya thirumadal on Utiram nakshatra days.
Kanninum ciruttumpu on chitirai nakshatra days.
Perialwar Thirumoli on swati nakshatra days.
Thiruviruttam on vishakam days.
Thirumalai on Kattai nakshatram days.
Upadesha ratnamala  on mula nakshatra days.
Mudal Thiruvantati on thiruvonam days.
Irandam Thiruvantati on on Avittam
Munram Thiruvantati on catyam(shatabhisha) days.
Tirumalai on revathi days.
Tirukkuruntantakam and tirunetuntantakam on Karthika days.
 a cycle of 27 days rest are holidays.

Month-wise Nakshatra Pārāyaṇa Chart

Chittirai (April–May)

Nakshatra	Recitation	Date
Aśvinī	Nityānusandhānam	____
Bharanī	Nityānusandhānam	____
Kārttigai	Tirukkuṟuntāṇḍakam & Tiruneduntāṇḍakam	____
Rohiṇī	Amalanādipirān	____
Mṛgaśīrṣam	Rāmānuja Nūṟṟandādi	____
Tiruvādhirai	Rāmānuja Nūṟṟandādi	____
Punarpūsam	Perumāḷ Tirumoḻi	____
Pūsam	Nityānusandhānam	____
Āyilyam	Nityānusandhānam	____
Magham	Nānmukan Tiruvandādi	____
Puram	Nācciyār Tirumoḻi	____
Uttiram	Ciṟiya Tirumaḍal	____
Hastam	Rāmānuja Nūṟṟandādi	____
Chittirai	Kaṇṇinuṇ Ciṟuttāmpu	____
Swāti	Periyāḻvār Tirumoḻi	____
Viśākham	Tiruviruttam	____
Anusham	Rāmānuja Nūṟṟandādi	____
Kettai	Tirumālai	____
Mūlam	Upadēsa Ratna Mālai	____
Purāḍam	Rāmānuja Nūṟṟandādi	____
Uttirāḍam	Rāmānuja Nūṟṟandādi	____
Tiruvōṇam	Mudal Tiruvandādi	____
Aviṭṭam	Iraṇḍām Tiruvandādi	____
Sadayam	Mūnṟām Tiruvandādi	____
Pūrattādhi	Nityānusandhānam	____
Uttirattādhi	Nityānusandhānam	____
Revati	Tirumālai	____

Repeat the same chart for each Tamil month:

• Vaikāsi
• Āni
• Ādi
• Āvaṇi
• Purattāsi
• Aippasi
• Kārttigai
• Mārgaḻi
• Thai
• Māsi
• Paṅguni

At the beginning of every month, simply copy the nakshatra dates from the pañcāṅgam into the "Date" column. The prescribed recitation remains unchanged throughout the year.