Conversion

1 year = 1 cen, chronnium, unified year (except leap year in both systems)

1 month ≈ 0.3 hec, hectochron, unified month (calculated as 30 days in month of Gregorian calendar)

1 week = 7/10 dec, decachron, unified week

1 day = 1 chron, day in UDATE system (starts in different hour though)

1 hour = 4 1/6 centichron, unified hour

1 minute = 6 17/18 minichron, unified minute

1 second = 11 31/54 microchron, unified second

1 cen, chronnium = 1 year (except leap year in both systems)

1 hec, hectochron ≈ 3 1/3 month (calculated as 30 days in month of Gregorian calendar)

1 dec, decachron = 1 3/7 week

1 chron = 1 day (starts in different hour though)

1 centichron = 0.24 hour = 14.4 minute

1 minichron = 0.144 minute = 8.64 second

1 microchron = 0.0864 second = 86.4 millisecond

.centichron:minichron:microchron = [(hour-5)*3600 + minute*60 + second]*11 31/54

For example:

06:00:00 = [(6-5)*3600 + 0 + 0] /1,000,000 * 11 31/54 = .041666 = .04:16:66

If the number is negative, it means in UDATE system it's still previous day. Make next calculation:

.centichron:minichron:microchron = 1 + [(hour-5)*3600 + minute*60 + second]/1000000*11 31/54