Conversation so far:
When did Saparmurat Niyazov become president?
CANNOTANSWER.
What was one of the big accomplishments during his presidency?
He renamed the town of Krasnovodsk "Turkmenbashi" after himself, and renamed schools, airports and even a meteorite after himself.
What laws did Niyazov change while president?
He also took part in creating new holidays with a specific Turkmen nature and introduced a new Latin-based Turkmen alphabet.
What years what his presidency in?
CANNOTANSWER.

Question: What other accomplishments did he have?
Self-contained rewrite: What other accomplishments together with creating new holidays and introducing Latin-based Turkmen alphabet did Saparmurat Niyazov have?