When is masternode payout?

Masternode payout is monthly, at the 15th for the previous calendar month. E.g. Calories collected in February are paid on the 15th of March.

Iridium node payout is quarterly: 15th of February, 15th of May, 15th of Aug, 15th of Nov for the previous quarter. E.g. Calories collected in February, March, April are paid on th 15th of May.