If you just need the 1999 Tamil calendar (dates, festivals, Rahu Kalam, Yamagandam), you can use the "Drik Panchang" or "Prokerala" website by manually changing the year to 1999.
Looking for the 1999 Pambu Panchangam PDF? (Download & Reference Guide) Pambu Panchangam 1999 Pdf
✅ Major libraries in South India (Madras University Library, Adyar Library) often keep bound copies of old Panchangams. You can request a scan for personal research. If you just need the 1999 Tamil calendar
Here are the most reliable ways to get the information you need: or Giri Trading Agency .
✅ Some publishers re-release "Old Panchangams" for specific years (especially 1999, 2000, etc.) in a single compiled volume. Search for "Pambu Panchangam Old Collection" on online bookstores like Amazon India , Flipkart , or Giri Trading Agency .