In Shwetambar Jain practice, there isn’t a separate elaborate birth ceremony as in some Hindu traditions. The common Jain approach around birth is to give the child a Jain name (Namkaran) and begin life with blessings and vows for a righteous path. The naming is usually done by family elders or a guru and is guided by Jain values rather than any external rite.

A few points specific to what you asked:

• The name Suraj is not a typical Jain name. Jain names are often chosen for virtuous meanings or in homage to Tirthankaras or Jain ideals.
• There is no universal, fixed post-birth ritual across all Shwetambar communities; practices can vary by community and family, but the emphasis remains on auspicious beginnings, non-violence, and spiritual discipline from early life.
• If you are asking about a particular ritual date (e.g., when Namkaran is ideally performed), there isn’t a single canonical day; families may choose an auspicious time based on local customs and guidance from their guru.

If you’d like, tell me exactly which aspect you want (Namkaran wording, auspicious timing, or the meaning of a specific name), and I can explain it in simple Jain terms.