Python calculating Unix timestamp difference in Minutes from a given epoch value

I would like to know the best approach from the below solutions to calculate the time difference in minutes between the current Linux timestamp with the given epoch value (for example "1512082800" extracted from ETL data):

python - Difference between two unix timestamps

old = datetime.datetime.fromtimestamp(float(epoch_value)) # eg: 1512082800
cur = datetime.datetime.utcnow()
print((cur - old).total_seconds() / 60) # difference between two Unix timestamps in minutes

Date difference in minutes in Python

fmt = '%Y-%m-%d %H:%M:%S'
cur = datetime.datetime.strptime(time.strftime(fmt), fmt)
epoch = datetime.datetime.fromtimestamp(float(1512082800)).strftime(fmt)
old = datetime.datetime.strptime(epoch, fmt)

old = time.mktime(old.timetuple())
cur = time.mktime(cur.timetuple())

# They are now in seconds, subtract and then divide by 60 to get minutes
print int(cur-old) / 60

Copyright License：
Author:「Ibrahim Quraish」,Reproduced under the CC 4.0 BY-SA copyright license with link to original source & disclaimer.
Link to：https://stackoverflow.com/questions/61406063/python-calculating-unix-timestamp-difference-in-minutes-from-a-given-epoch-value