Unsupported datetime format code

[clamadv]

Hi,

I am using python 3.12 and I would like to parse string as '2025:092:43200' into a datetime object.
2025 is the year (%Y), 092 is the day of the year (%j) and 43200 is the second of the day.
The last one, second of the day, is not supported by strptime and strftime so I have to parse my date into a datetime object manually.

I wonder if this format is planned to be supported. It is used in SINEX (Solution INdependent EXchange) file format.

[buran]

quick search and I found https://pypi.org/project/gnssanalysis/
The package itself may be useful for you, but anyway, it has helper functions for different date formats, incl. this one.

EDIT: searching for GNSS on PyPI and there are several more packages to work with GNSS files

[DeaD_EyE]

You could check it here: https://anavs.com/support/time-converter/

from datetime import datetime as DateTime
from datetime import timezone as TimeZone
from datetime import timedelta as TimeDelta


def parse_gnss(dt: str) -> DateTime:
    year, day_of_year, second_of_day = map(int, dt.split(":"))
    mm, ss = divmod(second_of_day, 60)
    hh, mm = divmod(mm, 60)
    return DateTime(year, 1, 1, hh, mm, ss, tzinfo=TimeZone.utc) + TimeDelta(days=day_of_year - 1)


gnss = '2025:092:43200'
dt = parse_gnss(gnss)

print(gnss, "=>", dt)

Output:
2025:092:43200 => 2025-04-02 12:00:00+00:00

[snippsat]

With Pendulum can do it like this.

import pendulum

def parse_gnss(s: str, tz="UTC") -> pendulum.DateTime:
    y, d, sod = map(int, s.split(':'))
    return (pendulum.datetime(y, 1, 1, tz=tz).add(days=d-1, seconds=sod))

pdt = parse_gnss('2025:092:43200')
print(pdt)

Output:
2025-04-02 12:00:00+00:00