Petter S commented the closed bpo-25155, so I open a new issue. Copy of messages starting at https://bugs.python.org/issue25155#msg320431:

msg320431 - (view) 	Author: Petter S (Petter S) * 	Date: 2018-06-25 17:52

I get this error when starting the interpreter in Windows subsystem for Linux (WSL). 

I am using Python 2.7.15rc1

$ python --version
Python 2.7.15rc1
$ python
Fatal Python error: _Py_InitializeMainInterpreter: can't initialize time                                                                                                                                          OverflowError: timestamp too large to convert to C _PyTime_t                                                                                                                                                                                                                                                                                                                                                                        Current thread 0x00007fe547231080 (most recent call first):                                                                                                                                                       Aborted (core dumped)

msg320432 - (view) 	Author: Petter S (Petter S) * 	Date: 2018-06-25 17:55

For Python 3:

$ python3 --version
Python 3.7.0b3
$ python3
Fatal Python error: _Py_InitializeMainInterpreter: can't initialize time
OverflowError: timestamp too large to convert to C _PyTime_t

Current thread 0x00007f0232c21080 (most recent call first):
Aborted (core dumped)

msg320441 - (view) 	Author: STINNER Victor (vstinner) * (Python committer) 	Date: 2018-06-25 21:06

> I get this error when starting the interpreter in Windows subsystem for Linux (WSL).

This bug is currently closed, please open a new bug.

About your issue. I'm not sure if Windows subsystem for Linux is officially supported. How did you install Python 2.7 and 3.7? Are you testing 32-bit or 64-bit Python? (Again, please answer in your new issue.)

msg320447 - (view) 	Author: STINNER Victor (vstinner) * (Python committer) 	Date: 2018-06-25 22:05

I tried 64-bit builds of Python 2.7 and 3.7rc1 (binaries from python.org) on Windows 10 on year 2045: start with no error, time.time() and datetime.datetime.now() don't fail.

I tried Python 2.7.12 and 3.5.2 on Ubuntu 16.04 in WSL on my Windows 10: same, start with no error, time.time() and datetime.datetime.now() don't fail. It's 64-bit Ubuntu with 64-bit binaries for Python 2 and Python 3 (check sys.maxsize).

I even compiled Python 2.7.15 and 3.7rc1 on Ubuntu 16.04 in WSL on my Windows 10: same again, start with no error, time.time() and datetime.datetime.now() don't fail. Python 2 and 3 have been compiled in 64-bit mode, since it's a 64-bit Ubuntu.

Everything is fine. I failed to reproduce your bug.

msg320473 - (view) 	Author: Petter S (Petter S) * 	Date: 2018-06-26 07:26

I also compiled Python myself on WSL.

The bug seemed to appear after computer had been running for a while. Before that, the interpreters were working normally. And after rebooting the problem disappeared.