2544
From Halopedia, the Halo wiki
(Based on the Military Calendar)
200,000 B.C.E.
100,000 B.C.E.
1945
2004
2160-2200
2160
2162
2163
2164
2170
2291
2310
2362
2390
2418
2490
2491
2492
2494
2496
2505
2510
2511
2512
2513
2517
2519
2525
2530
2531
2535
2536
2537
2539
2540
2542
2544
2545
2546
2549
2550
2551
2552
Spartan-Sheila is killed in The Battle of Miridem.