As per the order of anushthanam, Perumal Tiruvaradhanam is performed only after performing Madhyanikam at the prescribed time period.
Due to certain reasons if one has to perform Tiruvaradhanam earlier, a special abhigamana aradhanam before Madhyanikam can be done first and after Madhyanikam a brief aradhanam can be done.
Usually, the householders will do a brief abhigamana aradhanam – with suprabhatam for Perumal and a few stotras for the brief aradhanam; later a detailed Ijya aradhanam is performed. The sannyasi-s could do a detailed abhigamana aradhanam and a brief Ijya aradhanam.
The householders due to want of time, could do a detailed abhigamana aradhanam followed by a brief Ijya aradhanam.