Kalnirnay is traditionally in Marathi. An English version for 1986 would be a rare translation project, not an original publication. Search for "Kalnirnay 1986 English" separately, but the original Marathi version is the authoritative source.
If you are looking for specific Marathi festivals or tithis from 1986:
The 1986 edition was a "common year" starting on a Wednesday. Interestingly, the 1986 calendar is mathematically compatible with the year 2025, meaning its dates and days of the week align perfectly, making vintage PDF versions popular for collectors and enthusiasts. Key Features of the 1986 Marathi Edition