Click on the numbered circles to see legend.
| 0900,
| 13 June:
| Group 1, 3 Battleships, 9 Cruisers, 9 Carriers, and 27 destroyers, departs Tawi Tawi. |
| 0900,
| 13 June:
| Bombarding Saipan. |
| 2100,
| 13 June:
| Group 2, 2 Battleships, 4 Cruisers, and 27 destroyers, departs Batjan Anchorage. |
|
| 14 June:
| Submarine reports that large Japanese naval forces, present two days earlier, had sortied from Tawi Tawi. |
|
| 15 June:
| Submarines report the passage through San Bernardino Strait of large Japanese naval forces. |
| Morning,
| 16 June:
| Groups One and Two rendezvous and refuel. |
| Morning,
| 16 June:
| Admiral Spruance announces plan of action. |
| 1800,
| 17 June:
| Fleet departs rendezvous area enroute Southern Marianas. |
| Noon,
| 18 June:
| Fleet 600 miles west of Saipan. Carrier planes search for U. S. Fleet. |
| Noon,
| 18 June:
| Task Force 58 rendezvous. |
| Afternoon,
| 18 June:
| Fleet changes course to southeast, continues search. |
| Afternoon,
| 18 June:
| Tender-based patrol planes search 500 miles west from Saipan. Negative results. |
| Night,
| 18-19 June:
| Fleet continues to southeast. |
| Night,
| 18-19 June:
| Patrol planes execute radar search 600 miles west from Saipan. Negative results. |
| 0720,
| 19 June:
| Naval aircraft rise from Guam fields to engage U.S. carrier aircraft.
Combat air patrol from TF 58 sights enemy planes taking off from Guam fields. |
| 1004,
| 19 June:
| Carrier planes launch all-out attacks on ships of TF 58, continue throughout the day. Inflict minor damage on INDIANA and SOUTH DAKOTA. |
| 08000,
| 19 June:
| Large number of carrier aircraft arrive at Guam, expecting to refuel.
TF 58 rushes additional fighters into the air battle over Guam and inflicts heavy losses on Japanese. |
| Afternoon,
| 19 June:
| Carriers TAIHO and SHOKAKU sink as a result of morning torpedoing by U. S. submarines. |
| Night,
| 19-20 June:
| Fleet withdraws to westward, planning to refuel and return towards Marianas. |
| Night,
| 19-20 June:
| TF 58 heads to westward at 23 knots, hoping to catch the Japanese Fleet. Radar searches by patrol planes from Saipan give negative results. |
| 0525,
| 20 June:
| Fleet unable to pause for refueling because of proximity of U. S. scouting planes, continues westward all day. |
| 0525,
| 20 June:
| TF 58 launches planes to try to locate enemy fleet, results negative until about 1515, when enemy fleet contacted about 250 miles west of U. S. Fleet. |
| 0630,
| 20 June:
| 216 planes take off from TF 58 carriers to attack enemy ships. |
| Night,
| 20-21 June:
| Carrier HIYO and two tankers sunk and seven ships damaged by U. S. air attacks. |
| Night,
| 20-21 June:
| U. S. planes return and land on carriers in darkness, suffer heavy losses. |
|
| 21 June:
| Fleet retires toward Okinawa. |
|
| 21 June:
| Carrier planes search for Japanese cripples, negative results. |
| Evening,
| 21 June:
| TF 58 retires toward Saipan to protect Attack Force. |