One is Sree Guruvayoorappan suvarna mudra on Guruvayoor Ekadasi day. The other is in connection with Narayaneeyam day. Slokas from Narayaneeyam alone can be chanted in the latter.
There are two occasions: one is Sree Guruvayoorappan suvarna mudra on Guruvayoor Ekadasi day, and the other is linked to Narayaneeyam day. Only slokas from Narayaneeyam can be chanted on the latter occasion.