spawn pown randomly changed

[beetle8888]

after i stopped the server and started it up again, me and my friend spawned in a completely different area. some rando joined so i changed it to not being viewable and when we joined we were in a random spot. it's the same world but before we would spawn in the place we were building, is there any way to recover that spawn point or view the coordinates? i never reset the world or changed the seed, it just randomly changed. 

[Ben87]

You most likely didn't execute /setworldspawn for it to save your spawnpoint or did not sleep on a bed, you cannot recover where you were unless you have a backup/save.