Year 399 (CCCXCIX) was a common year starting on Saturday (link will display the full calendar) of the Julian calendar. At the time, it was known as the...

Year 399 BC was a year of the pre-Julian Roman calendar. At the time, it was known as the Year of the Tribunate of Augurinus, Longus, Priscus, Cicurinus...

calendar Eishō 10 (永正１０年) Javanese calendar 1430–1431 Julian calendar 1513 MDXIII Korean calendar 3846 Minguo calendar 399 before ROC 民前399年 Nanakshahi calendar...

ROC 民前2056年 Nanakshahi calendar −1612 Seleucid era 167/168 AG Thai solar calendar 398–399 Tibetan calendar 阴木羊年 (female Wood-Goat) −18 or −399 or −1171...

−1094 Byzantine calendar 5052–5053 Chinese calendar 癸未年 (Water Goat) 2241 or 2034     — to — 甲申年 (Wood Monkey) 2242 or 2035 Coptic calendar −740 – −739...

−1035 Byzantine calendar 5111–5112 Chinese calendar 壬午年 (Water Horse) 2300 or 2093     — to — 癸未年 (Water Goat) 2301 or 2094 Coptic calendar −681 – −680...

Buddhist calendar 399 Burmese calendar −783 Byzantine calendar 5363–5364 Chinese calendar 甲午年 (Wood Horse) 2552 or 2345     — to — 乙未年 (Wood Goat) 2553...

calendar 戊子年 (Earth Rat) 2306 or 2099     — to — 己丑年 (Earth Ox) 2307 or 2100 Coptic calendar −675 – −674 Discordian calendar 775 Ethiopian calendar −399 – −398...

calendar 5393–5394 Chinese calendar 甲子年 (Wood Rat) 2582 or 2375     — to — 乙丑年 (Wood Ox) 2583 or 2376 Coptic calendar −399 – −398 Discordian calendar 1051 Ethiopian...

Year of the Consulship of Peticus and Poplicola (or, less frequently, year 399 Ab urbe condita). The denomination 355 BC for this year has been used since...