Found it. Year 65, our calendar, Feb. 22, 10:15 P.M. (approx). Sixteen individuals. Time scar to present date and year. Hole plugged on or about Feb. 27. Structure therefore safe middle late Roman era, disregarding minor time-thread damage which runs out anyway. However—took general check on hunch, and hunch confirmed. There's another hole even closer to our time. I can tell by the strains on the major time-threads. No time to trace it down now. We've got about five hours worth of elasticity in the present time-fabric before there'll be (a) a time collapse, or (b) an attempt by the fabric to rearrange itself to relieve the strain. Even the rearrangement could do for us. This second hole's too close to our own period.
I'm no Sherlock, but to me it adds up to only one answer—Bugsomer. I'm going over and see if I can force the information out of him.
The damn fool!
March 3, 65: TO THE CAPTAIN OF THE ARENA: Order your gladiators to stretch out this battle with the Christians. I don't want a sheep-slaughter. I want some sport. Some running around and excitement. See to it.
NERO, Imp.
March 3, 65: TO THE EMPEROR: Hail Caesar! I will do whatever I can when the time comes. But you know how uncooperative these Christians are. They won't even pick up their swords and armor. They want to be martyrs. However, I promise that the Emperor will not be disappointed.
(signed) Lictus,
CAPTAIN OF THE ARENA