how to calculate - year, month, day and time

Question

Mathematics

How to calculate - year, month, day and time, waking up after a jump in space and time? On the ground, but no one knows where. The only clock on the ship is broken, and new ones can be bought - either after a few years - or they are already in the past and you need to press R, not :D.
Help!

Answer 1

Need clarification what tools do we have? Are the GPS satellites working?
What do we have: telescope, sextant, gnomon, compass, GPS receiver?
In the general case: By the position of the stars and planets, you can calculate the year, By the position of the zodiac constellations, the month. According to the phase of the moon day. According to the position of the sun, the time at the zenith will be astronomical noon (12-00).
Another question is why such accuracy?

Answer 2

It is possible to calculate an approximate date, having special equipment and a huge amount of statistical data.

Answer 3

I think you can determine time by the position of celestial bodies.