do number four in roman clocks still always be written as IIII instead of IV

Yes, in the context of traditional Roman sundials and some historical clocks, the number four is sometimes represented as "IIII" rather than "IV". This practice differs from the standard form used in most other contexts.

The reason for using "IIII" instead of "IV" in specific cases like certain old clock and sundial designs is due to a tradition that aimed to maintain symmetry and aesthetic balance in the numerals displayed. While "IV" is the conventional representation in mathematical and most written forms, "IIII" was used to ensure that all numerals had an even number of characters, making the layout of the clock face appear more balanced.

This use of "IIII" is considered a historical and stylistic choice rather than a standard rule for writing Roman numerals in contemporary settings. In modern usage, Roman numerals are typically written according to their standard forms, such as "IV" for 4.