Which Nakshatra Dasha is oldest

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As I've already shown it, in a post from "Rahu/Ketu and the Greco-Roman lunar nodes" topic, one of the oldest nakshatra dasha is Ashtottari which can be found in 60th chapter from Garuda Purana (4th century), before Varahamihira and probably about contemporary to Minaraja.

ShaDAditye dashA j~neyA some pa~nchadasha smR^itAH |
aShTAva~NgArake chava budhai spatadasha smR^itAH || 1\,60\.1 ||
shanaishchare dasha j~neyA gurorekonaviMshatiH |
rAhordvAdashavarShANi ekaviMshatirbhArgave || 1\,60\.2 ||

However, it can't be found in the writings of these authors. It seems that the ancient Indian astrologers have had the same reasons for secrecy like their greek counterparts, as Valens already shown it, in his Anthology.

I wonder if Vimshottari Dasha can be also found in one of the Puranas.

They say - https://en.wikipedia.org/wiki/Dasha_%28astrology%29 - the order of the planets in Vimshottari could have been observed in the sky in the year 649.

For such a configuration to appear in the sky, needed a very rare configuration, when Sun, Moon, Mars, Rahu, Jupiter, Saturn must have been situated between Venus and Mercury.