Just in case you want to hedge all your bets, follow this schedule for the most auspicious times of the Sinhala and Tamil New Year which are being celebrated this upcoming weekend.
“It is an ancient custom from king’s era to hand over the document that list the activities connected with Avurudu (New Year) listed out according to the auspicious times to the head of the country. The astrologer of the village who is known as the ‘Nekath Raala’ distributes the paper which indicates the relevant auspicious times” (http://www.colombopage.com/archive_13A/Apr03_1365004101CH.php).
Auspicious times for New Year
Sighting the new moon: Sunday April 14
Bathing for the Old Year: Saturday, April 13 applying an oil made of Nuga leaves
Dawn of New Year: Sunday, April 14 at 1.29 am
Punya Kalaya: From 7.05 pm on Saturday, April 13 to 7.53 am on Sunday, April 14. Cease all work at 7.05 pm on Saturday April 13 and engage in religious activities.
Cooking meals: Light the hearth at 4.06 am on Sunday, April 14 dressed in blue garments facing South and cook milk rice mixed with ghee and jaggery and a sweetmeat with sesame.
Starting work and partaking of meals:
Partake meals after starting work and making transaction at 7.05 am on Sunday, April 14 dressed in red and yellow mixed (copper) garments facing South.
Anointing the head : At 6.41 am on Monday, April 15 dressed in white garments anoint with a mixture made of wood apple leaves facing East standing on Imbul leaves under a canopy of wood apple leaves.
Leaving for work: For essential duties – 6.53 am on Monday, April 15 dressed in white facing East after partaking kiribath mixed with milk. Normal duties: 7.42 am on Wednesday April 17 dressed in green colour garments facing South after partaking kiribath mixed with jaggery.
The above are the correct auspicious times from http://www.dailynews.lk and verified by a bonafide Sri Lankan. (Thanks Samadhi!)