Hi

Pyorbital, a python library can handle this.

Check here for the source: https://github.com/pytroll/pyorbital

Documentation here: https://media.readthedocs.org/pdf/pyorbital/latest/pyorbital.pdf

FYI, Pyorbital is part of Pytroll (www.pytroll.org) which is a set of python libraries to read, calibrate and process meteorological and polar orbiting satellite images even at level 1.

Best

Sajid

Here is the actual link to the pyorbital documentation

http://pyorbital.readthedocs.org/en/latest/

Thank you, Sajid.   But I wish there is a website like https://lpdaacaster.cr.usgs.gov/estimator/reference_info.php , where I could login in and inquiry VIIRS overpass time.

Li

Would you believe they have an app for that?  

http://satcam.ssec.wisc.edu/

David,

unbelievable. I am very grateful for your link.

See also, for orbital tracks:  https://www.ssec.wisc.edu/datacenter/npp/

Dear Mr.James

This link contains other satellite orbit tracks at same time. Thanks a lot.