Answer

If you mean Posh Sud Dashami and Posh Vad Atham in 2027, the dates are:

• Posh Sud Dashami: January 13, 2027
• Posh Vad Atham: January 28, 2027 ( drikpanchang.com)

Explanation

In the 2027 Gujarati/Jain calendar view, Dasham Vad appears on January 13, 2027, and Atham Vad appears on January 28, 2027. ( drikpanchang.com)

Takeaway

So for Posh month in 2027, the relevant dates are January 13 for Dashami and January 28 for Atham. ( drikpanchang.com)