The Balinese calendar repeats every 210 days. It has 10 concurrent weeks, of lengths 1, 2, ..., 10 days. The 210 day cycles are unnumbered, so there is no way to convert a Balinese date into a unique date on another calendar.
Examples
gregorian_date(2025,6,1:10) |>
as_balinese()
#> <bali[10]>
#> [1] TRUE-02-02-03-04-05-01-07-02-00 FALSE-01-03-04-05-06-02-08-03-03
#> [3] FALSE-01-01-01-01-01-03-01-04-09 FALSE-01-02-02-02-02-04-02-05-07
#> [5] TRUE-02-03-03-03-03-05-03-06-06 FALSE-01-01-04-04-04-06-04-07-01
#> [7] TRUE-02-02-01-05-05-07-05-08-08 FALSE-01-03-02-01-06-01-06-09-01
#> [9] TRUE-02-01-03-02-01-02-07-01-04 FALSE-01-02-04-03-02-03-08-02-01