Dear Ganesh Sir,
I too had a doubt that Chinese New Year might be always on Thai amAvAsai.
It is not so. In 2015, it is on MAsi amAvAsai. (19th Feb)
Please have a look at this chart: ('MAsi' starts around mid Feb)
[TABLE="class: wikitable"]
[TR]
[TH="bgcolor: #F2F2F2, align: center"]
Animal[/TH]
[TH="bgcolor: #F2F2F2, align: center"]
Branch[/TH]
[TH="bgcolor: #F2F2F2, colspan: 3, align: center"]
New Year dates[/TH]
[/TR]
[TR]
[TD]
鼠 Shǔ Rat[/TD]
[TD]
子 Zǐ[/TD]
[TD]
19 February 1996[/TD]
[TD]
7 February 2008[/TD]
[TD]
25 January 2020[/TD]
[/TR]
[TR]
[TD]
牛 Niú Ox[/TD]
[TD]
丑 Chǒu[/TD]
[TD]
7 February 1997[/TD]
[TD]
26 January 2009[/TD]
[TD]
12 February 2021[/TD]
[/TR]
[TR]
[TD]
虎 Hǔ Tiger[/TD]
[TD]
寅 Yín[/TD]
[TD]
28 January 1998[/TD]
[TD]
14 February 2010[/TD]
[TD]
1 February 2022[/TD]
[/TR]
[TR]
[TD]
兔 Tù Rabbit[/TD]
[TD]
卯 Mǎo[/TD]
[TD]
16 February 1999[/TD]
[TD]
3 February 2011[/TD]
[TD]
22 January 2023[/TD]
[/TR]
[TR]
[TD]
龍 Lóng Dragon[/TD]
[TD]
辰 Chén[/TD]
[TD]
5 February 2000[/TD]
[TD]
23 January 2012[/TD]
[TD]
10 February 2024[/TD]
[/TR]
[TR]
[TD]
蛇 Shé Snake[/TD]
[TD]
巳 Sì[/TD]
[TD]
24 January 2001[/TD]
[TD]
10 February 2013[/TD]
[TD]
29 January 2025[/TD]
[/TR]
[TR]
[TD]
馬 Mǎ Horse[/TD]
[TD]
午 Wǔ[/TD]
[TD]
12 February 2002[/TD]
[TD]
31 January 2014[/TD]
[TD]
17 February 2026[/TD]
[/TR]
[TR]
[TD]
羊 Yáng Goat[/TD]
[TD]
未 Wèi[/TD]
[TD]
1 February 2003[/TD]
[TD]
19 February 2015[/TD]
[TD]
6 February 2027[/TD]
[/TR]
[TR]
[TD]
猴 Hóu Monkey[/TD]
[TD]
申 Shēn[/TD]
[TD]
22 January 2004[/TD]
[TD]
8 February 2016[/TD]
[TD]
26 January 2028[/TD]
[/TR]
[TR]
[TD]
雞 Jī Rooster[/TD]
[TD]
酉 Yǒu[/TD]
[TD]
9 February 2005[/TD]
[TD]
28 January 2017[/TD]
[TD]
13 February 2029[/TD]
[/TR]
[TR]
[TD]
狗 Gǒu Dog[/TD]
[TD]
戌 Xū[/TD]
[TD]
29 January 2006[/TD]
[TD]
16 February 2018[/TD]
[TD]
3 February 2030[/TD]
[/TR]
[TR]
[TD]
豬 Zhū Pig[/TD]
[TD]
亥 Hài[/TD]
[TD]
18 February 2007[/TD]
[TD]
5 February 2019[/TD]
[TD]
23 January 2031
[/TD]
[/TR]
[/TABLE]
Source: Wiki