bruno gang age differences
(disclaimer, fugo doesn't have a canon birthday, but shares a birth year with giorno and is 16 when the part starts, and as the part takes place in april, and as giorno turns 16 ten days after the part ends, you can subtract 1-4 months to majority of giorno's numbers to get fugo)
giorno and trish: 1 month, 23 days
giorno and mista: 2 years, 4 months, 13 days
giorno and narancia: 1 year, 10 months, 27 days
giorno and abbacchio: 5 years, 22 days
giorno and bruno: 4 years, 6 months, 19 days
trish and mista: 2 years, 6 months, 5 days
trish and narancia: 2 years, 11 days
trish and abbacchio: 5 years, 2 months, 14 days
trish: and bruno: 4 years, 8 months, 11 days
mista and narancia: 5 months, 17 days
mista and abbacchio: 2 years 8 months 9 days
mista and bruno: 2 years, 2 months, 6 days
narancia and abbacchio: 3 years 1 month 25 days
narancia and bruno: 2 years 7 months 23 days
abbacchio and bruno: 6 months 2 days